In life, there will be always be things, or people, that make us cry, who betray us, who steal from us, that make us wanna kill ourselves at a certain point of time. But let it go. Let go then anger, the grudge, and any intention for revenge. Let go and see the bigger picture. An unhappy moment in life is just another moment among other moments to come. Let go and move on.
And let go of the people who hurt you. They are toxic. Its nice to be nice, but its wiser to be wise. I believe that God taught us to be nice to people, but God never never told us to please everyone we know. We have the right to do the right thing. As the owner of our own life, we know what's right for us.