I think you should take a piece of paper and physically write down your biggest goals. Like, I'm talking about big, big goals that will likely take multiple sessions to cover -- e.g., weeks, months, or even years. From there, breakdown the goals into smaller, achievable subgoals. In your case, your big, big goal would be to improve your ability to trust people, and your smaller goals will be things like "trust my family," "trust my friends," "trust my psychiatrist," "trust my coworkers," etc. etc.. After that, you can break things down even further by saying something like... IDK... "trust my friends to not stab me in the back" and "trust my friends to drive me home when I am drunk." (I know, those are terrible examples, but I think you can see what I'm getting at.)

Think of it like making a decision tree: