Without siblings, cousins, or other extended family, your support network is built entirely from chosen relationships — which, while requiring more deliberate effort, can be just as strong.
Start from existing relationships
Long-standing friendships, former colleagues, and neighbors are often your highest-leverage starting points, since some trust already exists.
Layer in structure
Combine informal friendships with formal supports (a professional fiduciary, a care manager) to cover roles that specifically require legal authority or professional expertise.
See Building a Care Team With No Children or Spouse for a role-by-role breakdown.