How can I reinvent myself?

You reinvent yourself by stop being enslaved to the past and all that it entails including failures, negative self-judgments, self-defeating behaviors and processes of thinking. Learn from mistakes and move on. Release all those tensions with a deep breath and compliment yourself each day, then grab a piece of paper and brainstorm ideas on what you could do to reach your goals. Then, at the end of the day, reward yourself for your effort.