<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e99d9-9834-7034-bd04-2958ac918725,g:73a5ca88-83c3-4776-a8d2-c4fbd9fd8ff6-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://strive.com/role/Cover" xlink:type="simple" xlink:href="asst-20260608.xsd#Cover"/>
  <link:definitionLink xlink:role="http://strive.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019e99d9-9834-7954-9b96-820f1cf60f44" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_DocumentInformationTable_019e99d9-9834-7954-9b96-820f1cf60f44" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e99d9-9834-7a6a-b3af-7e2b41839e99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019e99d9-9834-7954-9b96-820f1cf60f44" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e99d9-9834-7a6a-b3af-7e2b41839e99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a6a-b3af-7e2b41839e99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e99d9-9834-7a6a-b3af-7e2b41839e99" xlink:to="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a6a-b3af-7e2b41839e99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a1b-977c-353a5f5b9724" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e99d9-9834-7a6a-b3af-7e2b41839e99" xlink:to="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a1b-977c-353a5f5b9724" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_019e99d9-9834-7b09-8c11-674bb4e71337" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a1b-977c-353a5f5b9724" xlink:to="loc_us-gaap_CommonClassAMember_019e99d9-9834-7b09-8c11-674bb4e71337" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_019e99d9-9834-7be3-87c0-d79f2cdf7670" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeriesAPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e99d9-9834-7a1b-977c-353a5f5b9724" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_019e99d9-9834-7be3-87c0-d79f2cdf7670" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e99d9-9834-7790-b703-7d60625b07ae" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_DocumentType_019e99d9-9834-7790-b703-7d60625b07ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e99d9-9834-79ab-9be7-c29c3c99a2a6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_DocumentPeriodEndDate_019e99d9-9834-79ab-9be7-c29c3c99a2a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e99d9-9834-7cf8-9ea5-439c7631cbed" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityRegistrantName_019e99d9-9834-7cf8-9ea5-439c7631cbed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e99d9-9834-7cff-8a38-a836f98f5740" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e99d9-9834-7cff-8a38-a836f98f5740" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e99d9-9834-7661-a2a4-38f4fa3b88b0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityFileNumber_019e99d9-9834-7661-a2a4-38f4fa3b88b0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e99d9-9834-7f3c-9eb9-dc4d8bd4ef30" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e99d9-9834-7f3c-9eb9-dc4d8bd4ef30" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e99d9-9834-74f5-b575-53f74d71ab4e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityAddressAddressLine1_019e99d9-9834-74f5-b575-53f74d71ab4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019e99d9-9834-7190-aa6c-9bbb5dfd4a48" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityAddressAddressLine2_019e99d9-9834-7190-aa6c-9bbb5dfd4a48" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e99d9-9834-77e2-92b1-a6d2e4002ae8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityAddressCityOrTown_019e99d9-9834-77e2-92b1-a6d2e4002ae8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e99d9-9834-7288-8ad5-829f3cae32c6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityAddressStateOrProvince_019e99d9-9834-7288-8ad5-829f3cae32c6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e99d9-9834-7879-a05d-505b09ad6057" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityAddressPostalZipCode_019e99d9-9834-7879-a05d-505b09ad6057" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e99d9-9834-789d-ae4a-a9bbfedd8722" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_CityAreaCode_019e99d9-9834-789d-ae4a-a9bbfedd8722" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e99d9-9834-77b4-89d3-863913496df9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_LocalPhoneNumber_019e99d9-9834-77b4-89d3-863913496df9" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e99d9-9834-768b-b2a6-766284df6835" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_WrittenCommunications_019e99d9-9834-768b-b2a6-766284df6835" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e99d9-9834-7a01-954a-113ff4c68d39" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_SolicitingMaterial_019e99d9-9834-7a01-954a-113ff4c68d39" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e99d9-9834-7817-96af-521506312047" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_PreCommencementTenderOffer_019e99d9-9834-7817-96af-521506312047" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e99d9-9834-7469-9bee-db35cbae9fd2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e99d9-9834-7469-9bee-db35cbae9fd2" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e99d9-9834-74cd-80a2-6359ba99bc82" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_Security12bTitle_019e99d9-9834-74cd-80a2-6359ba99bc82" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e99d9-9834-7a71-938f-5e61b391cdf1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_TradingSymbol_019e99d9-9834-7a71-938f-5e61b391cdf1" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e99d9-9834-7934-90dd-75ab81e3fee3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_SecurityExchangeName_019e99d9-9834-7934-90dd-75ab81e3fee3" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e99d9-9834-7677-8e2f-229621d45d04" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e99d9-9834-7677-8e2f-229621d45d04" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_019e99d9-9834-766e-b887-74bd12a542c3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityExTransitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityExTransitionPeriod_019e99d9-9834-766e-b887-74bd12a542c3" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e99d9-9834-753b-97d5-0ffa9dc3b147" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_AmendmentFlag_019e99d9-9834-753b-97d5-0ffa9dc3b147" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e99d9-9834-79f3-811e-9ac90c97d9db" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e99d9-9834-76ef-9f33-c6d0c2ad2d42" xlink:to="loc_dei_EntityCentralIndexKey_019e99d9-9834-79f3-811e-9ac90c97d9db" xlink:type="arc" order="23"/>
  </link:definitionLink>
</link:linkbase>
