Over time as most people fail the survivor’s exacting test of trustworthiness, she tends to withdraw from relationships. The isolation of the survivor thus persists even after she is free.
Judith Lewis Herman

Isolation is a powerful way to protect us from harm.  The flip side is that it is a powerful way to protect us from joy.  We are social creatures and need companionship.  Little by little, you can choose to let in those that have earned your trust.  Remember that the worst has passed.  This is the present, you can begin at any time.