How can i reinvent myself to what i want to be?

You have to wake up in the morning with positive thoughts, feelings, and goals. Try to build yourself confidence, by exercising if you really feel uncomfortable with your body, I'm sure your not ugly...every girl always feels that way and majority of time thats not true. If your not happy with your look fix yourself up, get a hair cut, experiment with a bit of make up. But you have to learn to believe in yourself, otherwise there is no possible way you can change for sure. Hope this helped.