“Not forgiving someone is like drinking poison and expecting someone else to die."

I have been drinking poison.  This is so very true.  I've felt angry and resentful for over a YEAR!  Awful.  Just awful.  Forgiveness might have saved me some trouble.  I know I need to move on and I know I need to forgive to be able to do that.  But, I can't.  I just can't forgive.  I still feel so much hate.  How does one forgive someone and stop hating them?  I cannot imaging doing it right now.  I understand I need to for myself, but I just can't see how to do it.

How do I forgive a person who tried to assault me, repeatedly?