There needs to be understanding that anger never helps to solve a problem. It destroys our peace of mind and blinds our ability to think clearly. Anger and attachment are emotions that distort our view of reality.
One can no more keep the mind from returning to an idea than the sea from returning to a shore. For a sailor, this is called the tide; in the case of the guilty it is called remorse. God stirs up the soul as well as the ocean.
I should like to meet a philosopher like Nietzsche somewhere in a train or a steamer, and to spend the whole night talking to him. I consider his philosophy won't last long, however. It's more showy than convincing.