One of the best approaches to manage anger is to talk and confide to others. You may talk to a friend, counselor, or selected group with a common purpose to help each other. Talking to somebody about the feelings you have in your heart relieves tension. It is like unloading a heavy burden.
It is not necessary that any advice be given. Just lending a listening ear is enough. Advice may be given if it is sought. It opens your mind to new ideas and perspectives that you may not have thought of due to the anger you have within.