I think you can learn to trust in small increments. You don't need to give over all your trust straight away. You can trust with some things and not others. For me sometimes i think that trust comes naturally whether you want it to or not, i'm not scared of trusting, i'm scared of being hurt. I know i trust my therapist in a lot of ways but i am scared she hurts and disappoints me and that there's not enough of myself left after that hurt to recover.