Shadows of a Former Past

I have been thinking about this for some time now, and i am at the final step (asking fellow Gamingforcinans).

Basically the deal is this; in my past, things happened, not like 'rape or sexual harassment' bad things, but just unpleasant memories. I want to rid myself of them but i know that is impossible. So for my graduation i proposed i would do this once i said my goodbyes to friends and start at college (since none of my friends are going to the same college as me). When i get there i have the idea of taking the once chance to erase my past by never talking about it and when people ask, i tell them i cannot recall anything about it.

Now the problem is this, 1. I don't want my friends to think i hate them, 2. I don't want people to misunderstand this and just tell me to stop being stupid and just deal with a bad past and 3. i know this is stupid because eventually someone will remember something from your past and talk about old times, yatta yatta. What i am basically saying is this, i want to rid my past threw never speaking of it, but how can i do this without the problem of getting myself into a 'i lost who i really am' view and 'my friends think i hate them' problem? Any suggestions?

How ya doing, buddy?