How do you kill a feeling?

A friend of mine tweeted last night the question, "How do you kill a feeling?"...and it actually made me wonder if it is even possible to kill your feelings.
 I was studying for my Pharmaco quiz last night when I got hurt by someone's words. I really couldn't focus reviewing, cause all I could think about were his words. I wanted to focus on Pharmaco. I didn't want to feel what I was feeling. If there was a way to not feel the pain that his words have caused me, I'll do everything to not feel that pain. I don't want that feeling. It was like I was slowly getting killed. At that moment, I just want to be numb.

Today, I passed by the church. I really wanted to take the pain away from my heart. I even asked for His guidance. I wanted everything to be okay. That was what was on my mind.

I knew to myself I am ready to forgive that person. I knew I wanted to be happy again. But I guess, something was stopping me. The pain that I felt was stopping me to bring everything back to normal.  I continue pushing him away.

People could think that what he said to me about giving up was just shallow for me to get mad at him like this. But I can't take one thing away from my mind: What he did hurt me cause he can't deny the fact that once in his life, he felt giving up on me.

That person is too important to me. I can't afford to lose that person. I even told myself that I wouldn't get mad at him, even just for this week. And I failed. I failed myself. I never stopped hurting him, I guess. :(

I want this to end.
I want to be happy again.
But why does my heart keep on stopping me?
  How do I kill this feeling?