He who would be serene and pure needs but one thing, detachment.
When you learn not to want things so badly, life comes to you.
The more you lose yourself in something bigger than yourself, the more energy you will have.
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.