Obey the principles without being bound by them. - Bruce Lee

Reality is being itself. — It is being itself, in becoming itself. Reality in its isness, the "isness" of a thing. Thus isness is the meaning — having freedom in its primary sense — not limited by attachments, confinements, partialization, complexities.

The aphorism "as a man thinketh in his heart so is he" contains the secret of life.

There are no limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you.