The past is the past

Chances only once in everything, in life. You can't have the time back when the time had past. that's why there's a saying Time is MONEY. So, if you had been hurt in the past which you could only blame on people then just let it go. It is the best way to help you grow stronger. and why not trying a new life instead?
         The best way to revenge is to have life in peace. Thus, forgive those who had hurt you and try to be friend with them except if they are proud and arrogant.