To Forgive and To Forget, Really... how do you do it? Options

Have you had someone really important and beloved to you do something really bad/dissapointing/whatever to you which you simply cannot forgive, not to mention to forget? When in the end you ended up filled with so much hate, mixed with love and resentment no matter what you've tried to really forget and forgive? And the feeling still there like for 2 years as it kept popping into your head even when you were not intentionally want to think and when you least expected it? Well, maybe I'm in a bad mood today, but really... I want to hear your thoughts and experience on dealing with this.

(IMG:style_emoticons/default/hmm.gif) well no law system is perfect men are not perfect but surely we could change our law systems ,, like me i come from a cuntry where the law really sucks in my eyes over and over you hear some F up man has raped a teen and he get 4-5 years i simply hate that,, its way to little to get for such a crime its like the system dont think on the victims at all oh yes she will get crisis help but imagine she knows he will be out in 5 years maybe he feel sorry for what he did maybe not who can tell,, alot of criminals are masters in cheating people,
the worst is that the law system punish money crimes much much higher then all other crimes like ones there was a 14 year old girl who copied some money on a copy mashine she thought it was a brilliant idea to get rich that way well she was set to get 7 years for that.
i just feel that crimes where people are victims should be highrated, people are higher then money in my eyes but i know its not that way and never will be money rule the world, money and power.
about how to draw a line well we should vote some people who tell how their oppinions are and how they will make the laws and then 3/4 of the board should agree with the laws they made before it go live to be the new laws.
and each 5-10 year they could get together and listen to the population on how the system is and if he population feel it should be changed and in what way,, if the majority of the population was happy then its a good system but if everyone is unhappy something got to be changed.
and again the board should make the final dissisions but still they should listen to the population aswell.