Anger is a bear, but if you pay attention, you'll hear it roaring useful instructions about how you should steer your future. Don't fear it, run from it, tranquilize it, try to kill it. Just leave the kids with a sitter, team up with a sympathetic friend, spouse, therapist, or journal, and let your angry animal self bellow its messages. There will be a lot of meaningless sound and fury, but there will also be information about exactly what needs to change in your present and future so that you'll stop suffering from old regrets and create new ones.
Reference: Martha Beck