Previous relationship messed me up

I recently met a man I really liked. We spoke on the phone twice and my conversation was so awkward both times. I realized I wasn't really participating in the conversation, I wasn't asking questions. It was like I was frozen and could not think straight. This man decided not to contact me again and I'm pretty sure he is not interested in pursuing a relationship with me.

I pondered about what happened to me in those moments and I realized that my last relationship has left me really insecure. The entire time I kept thinking that this person is too good for me, that if I tell him something about myself he's going to judge me and not like me. When The truth is that that may have happened but at least I would have been myself. In this scenario I feel worse because this person didn't even get to know the real me.

I also realize that I need to first work on myself and heal these wounds that I have. My confidence and self-worth has really taken a hit from the way my ex-treated me. I just feel kinda bummed that I didn't get a chance with this person because of my insecurities.