Lead Me To The Path of Forgiveness

About 56 mins ago it was Thanksgiving. Instead of being thankful I found myself in a moment of anger and pain.
I thought about this person who keeps constantly hurting me and unconsciously breaking my heart again and again.
But I don't know why at the end of the day as angry as I am, God has given me the heart to love them anyhow. And sometimes its not easy like tonight. I found myself upset at something really simple and it bought back all the things this person has done to me in the past. I found myself scooping and scooping back to those memories...and all I wanted to do at the moment was to be angry and plan schemes against this person to let them know how much they have hurt me.
But I don't get it.
Because I know that I am not suppose to be angry. I am not suppose to feed those thoughts or those feelings.
And I have said and told this person before that I forgive them. I forgiven them for what they have done to me. Then why do I still feel this resentment? Why do I still feel this hurt for what they have done?
I tried to google scriptures on forgiveness. The problem was I already KNEW what I need to do and I've already forgiven them but have I fully forgiven them if I still feel this pain??

I bumped into this blog where the author was talking about forgiving and how it still hurts. Her story was similar to mine but what spoke out to me was how...forgiveness is not a feeling or an emotion...or a one time thing but something we have to keep doing over and over again. In the author's word, "You may need to forgive this person everyday for a long time." And this is where I have found myself at...I don't really know what forgiveness is and there are still so much I need to learn.
How to love, to forget and to let go.
I thought at first that I have not fully forgiven this person...when really I have to allow forgiveness to heal my wounds and pain and that it is a process not a one time thing like the author said. And I can't do it on my own...I have to rely on God's strength and His might to do it. I have to know that no matter how much this person may continue to hurt me that God is going to take care of it. My schemes and revenge cannot beat God's ways.
So in the meantime as I learn how to forgive...no matter what they throw at me I will respond in love...even when it hurts so much...I will respond in love...
the old me would hate me for this because it seem like my choice to love this person after all they did to me may make me seem weak and vulnerable but like C.S. Lewis says, "To love at all is to be vulnerable." And I know when I forgive...God has forgiven me (Matthew 18:35)

- Courage Man

To read more about I've Forgiven But It Still Hurts:
http://laurablogsagain.blogspot.com/2011/06/ive-forgiven-but-it-still-hurts.html