Millions of people live a one-sided life and pass on in incompleteness. God has given each of us a soul, a mind, and a body, which we should try to develop uniformly. If you have led a life dominated by worldly influences, do not let the world impose its delusions on you any longer. You should control your own life henceforth; you should become the ruler of your own mental kingdom. Fears, worries, discontent, and unhappiness all result from a life uncontrolled by wisdom.
-- Paramahansa Yogananda, SRF Lessons