There is no genuine happiness and peace of mind where there is repressed anger. They have no basis for comparison. You will never know the experience of perfect peace, contentment, and genuine happiness until you experience it. We, our families, our society, our nation and the very world itself are in need of a healing, and healing begins with us. God did not create anything that is not perfect.
All neurotic behavior brings suffering in one form or another.
You have a choice of which course of action you take. Managing and controlling anger do not free us of it. Regardless of how many times we count to ten, it does not free us of our repressed anger. Understanding our anger frees us of it. We have the choice.