Hello Everyone (Im sorry if this gets a little lengthy)

I am currently 16 years old, and although I am still a child I feel as though my mind is WAY older than most children my age. For some time now I have been regretting some actions that I have done in my early adolescent years (ages 12 and younger). It scares me because I know most teenages could care less about what they did when they were 12, or much less even remember. Before I go any further I would like to announce that I have been diagnosed with OCD and anxiety. It all started in middle school (6th grade) I began hanging out with all the popular girls and started to act like them instead of myself. I wanted to fit in and I wanted everyone to like me. I knew that if all the other kids found out who I really was, they would think I was a nerd and wouldnt like me. This countinued into 7th grade. In the middle of 7th grade, I realized that I wanted to be myself, and to stop acting like everyone eles was. I am currently in the 10th grade and I am stressed out about all the actions I did in my early middle school years. If anyone can relate to this, please reply.