Logic won't change an emotion but action will.
The right quote can inspire people to change their ways.
Kids instinctively know - although they will argue to the contrary - that they really are not mature enough to make good decisions on some important issues.
The first step in solving a problem is to recognize that it does exist.
People don't buy drills they buy holes
Check the records; there has never been an undisciplined person who was a champion. Regardless of the field of endeavor, you'll find this to be true.