What does it take to make mental/emotional scars heal?

I've been trying for decades and in spite of my efforts I have been unsuccessful.

I'm not complaining about the past. I honestly just want to move forward. Wish I had some kind of 'amnesia' drug that would let me forget the bad shit. I think I'd even be willing to give up all my memories if I could just get away from this emotional /mental torture.

Fuck the past. Who cares? The here and now is what is important.

Damn it! Why can't I make my mind behave!!!!