If it ain't broke, don't fix it' is the slogan of the complacent, the arrogant or the scared. It's an excuse for inaction, a call to non-arms.
The best method of overcoming obstacles is the team method
Leaders honor their core values, but they are flexible in how they execute them.
Don't let your ego get too close to your position, so that if your position gets shot down, your ego doesn't go with it.
It ain't as bad as you think. It will look better in the morning.
One of the greatest talents of all is the talent to recognize and to develop talent in others.