Anger is a result of unfulfilled desires. When you feel anger, try to take a number of regular, deep breaths. As you inhale, feel that you are breathing in peace. As you exhale breath out anger.
Keep a mental diary. Daily watch your actions and at night take a few moments to review the day to see how you did and how you can do better.
Learn to control feeling first in slightly disagreeable or agreeable situations and then apply this to more disagreeable situations.
Pray to God that He take your anger. Willingly give it to him. You have to let go of it. On a daily basis this means to not identify with it, to not define yourself as an angry person, rather one who is practicing kindness and patience and respect for other’s realities.