change one's ways

“Why is it fiddlesticks if I stop giving people heart attacks over nothing? Why shouldn’t one change one’s ways, improve one’s character ?” I must have been an interesting sight, that instant, big shaggy monster intense and earnest, bent like a priest at his prayers.

Either way, D’Antoni’s departure is a reminder of how difficult it is for anyone—team member or team leader—to change one’s ways, especially if they are ways that have helped one win in the past.