Forgive and "FORGET" thats the key word!

I am really trying to forgive and forget, but all the past pain comes back every time I am ignored and every time I don't understand the actions!  I don't even know how it came to be like this. We were great friends, or so I thought. It really bothers me to think that I'm being judged for something I'm not. Doesn't even want to take the time to get to know who I really am. How can I just let it go and be free from these negative feelings? I start to feel that I have let it go, then something else happens to bring my annoyance back. What really bothers me is others are being hurt too. Please Lord, help me to forgive and "FORGET".