Real, constructive mental power lies in the creative thought that shapes your destiny, and your hour-by-hour mental conduct produces power for change in your life. Develop a train of thought on which to ride. The nobility of your life as well as your happiness depends upon the direction in which that train of thought is going.
Realize that true happiness lies within you. Waste no time and effort searching for peace and contentment and joy in the world outside. Remember that there is no happiness in having or in getting, but only in giving. Reach out. Share. Smile. Hug. Happiness is a perfume you cannot pour on others without getting a few drops on yourself.
Remember the rights of the savage, as we call him. Remember that the happiness of his humble home, remember that the sanctity of life in the hill villages of Afghanistan, among the winter snows, is as inviolable in the eye of Almighty God, as can be your own.
Shall I give you my recipe for happiness? I find everything useful and nothing indispensable. I find everything wonderful and nothing miraculous. I reverence the body. I avoid first causes like the plague.