Tolerant with others. Strict with yourself.

“The only person you get to be truly hard on is you. It will take every ounce of your self-control to enforce that - not because it’s hard to be hard on yourself, but because it’s so hard to let people get away with things you’d never allow in yourself. To let them do things you know are bad for them, to let them slack off when you see so much more in them.”