hat re-training is called meditation. The initial goal of meditation is to quiet the mind, the intermediate goal is to stabilize moment-to-moment awareness, and the final goal is to gain stable access to the wisdom and truth of unity consciousness. There we find the pinnacle of human flourishing.
As Norman Vincent Peale said: "When you become detached mentally from yourself and concentrate on helping other people with their difficulties, you will be able to cope with your own more effectively. Somehow the act of self-giving is a personal power-releasing factor."
Joy is different than happiness although they are closely related. Joy contains an aspect of happiness, but it is deeper rooted, rooted in the good earthy, visceral goodness that is available to all of us despite tragedy and pain.