"I think it helps me. You know, I've got two more meets under my belt, and that's always a good thing"

Carly Patterson is referring to the benefit of having more experience in her sport. She is stating that having 2 more fulfills under her belt is an advantage because it provides her more practice and experience. This experience will assist her to become a much better professional athlete and to enhance her performance. She is positive that the extra meets will help her to become a better competitor. She is likewise likely referring to the self-confidence she will gain from having more experience in her sport. Having more fulfills under her belt will provide her the self-confidence to handle more tough competitions and to push herself to reach her goals.