is it just me? why am I like this?

I'm in a relationship after being in a relationship for a year & being mentally, physically, & emotionally abused. We are having problems & it's basically because I'm so needy. I need reassurance every minute of the day. If I don't get it I immediately feel like I did something wrong & he doesn't want me. I hate being this way. When I try to relax & hide it, it drives me even more crazy. I don't want to push him away. How could I fix this?