Always express anger never hold it in! But don't ever explode when angry. Make sure anger comes out in a productive way. These points are key. Anger will never go away completely but by always allowing ourselves to think when we calm down we can again think rational. Eventually with time and age we are able to operate realising that anger takes us away from rationality. It hurts us more then it hurts others and in the end we are the only ones that control our actions and what we do with that anger.

Keeping busy and your mind occupied is best or taking a rest or walking away from things and finding that happy place in your mind before you react with anger.

All the best to people struggling I hope you find peace!