Holding on to anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned.
In the end, only three things matter: how much you loved, how gently you lived, and how gracefully you let go of things not meant for you.
When I let go of what I am, I become what I might be.
The quicker you let go of old cheese, the sooner you find new cheese.