The human being who lives only for himself finally reaps nothing but unhappiness. Selfishness corrodes. Unselfishness ennobles, satisfies. Don't put off the joy derivable from doing helpful, kindly things for others.
It seems to me probably that any one who has a series of intolerable positions to put up with must have been responsible for them to some extent... they have contributed to it by impatience or intolerance, or brusqueness-or some provocation.