To find the deep meaning of life, you must get lost in the blue sky and go beyond your comfort zone.

To grow—overcome and go beyond your barrier.

Seriously, if you always put limits on what you can do, physical or anything else; it'll spread over into the rest of your life. It'll spread into your work, into your morality, into your entire being... There are NO limits. There are plateus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level.

You can only exceed your limits if you’ve discovered them.

Never compete with your master, because that is disrespect to him! You are your only rival, you compete with yourself, go beyond yourself!