Forgiveness

I believe in people n i got some good bunch of good people in my life too. People who are supportive, loving and most importantly who tells me when I’m wrong. Today my father told me a very important lesson that i know i should learn n practice but even then I’m unable to do so. He told me that we should be forgiving, if we don’t forgive then how can we expect others to forgive us n it’s not possible to hold grudges too far, the only person badly affected due to that grudge is your own self but it is not so easy for me, there are people in this world whom I don’t want to forgive n i can’t forget what they did to me. U know those people have never even said a single sorry or acknowledged that they have done something wrong then how can anyone expect me to forgive n forget. Maybe someday I’ll forgive them for whatever pain they caused me so that I can Stop hurting but I can never ever forget. Hey guys!! Please tell me what should I do? Am i right? This feelings, this hurt which I am feeling is it so wrong to feel? Please share your views.