Who I am or Who am I?

I have a general question.

What do u do when u don't feel like enough? 

This is hard for me. I've had so much crap from guys that I made myself strong. If they felt I wasn't enough, I walked. If they want another, I accepted and moved on. For some odd reason, they would try later to return but I don't go back.

But here, in this lifestyle, I feel so insecure. I feel like I'm not enough for my Dom. I find myself curious about different things I haven't tried but scared to try them. I know patience can only go so far. I don't know if it's I don't trust him or I just don't trust myself. Either way, this lifestyle makes me feel like I'm not enough for my Dom sometimes