Never confuse activity with accomplishment.
A life not lived for others is not a life, a game not played for others is not a game.
It is impossible to attain proper physical condition without being sound both mentally and morally.
You must believe in what you're doing, that what you're doing is the proper thing, the right thing. And you must have faith that things will end up as they should, which doesn't mean as you want them to, but things will work out as they should.
Build shelter against a rainy day.
Never be thrown off stride in how you behave or what you believe in because of outside events.