A couple of pieces I've heard (and rejected). "Just tell your dentist you're not going to pay any fee for missing your appointment, and if he still wants to charge you, ask for your records and find a new dentist." I asked what the fee was, and they waived it because I'd been a customer of theirs for 20 years and never missed an appointment before. "Just do Taekwondo until you get your black belt, then do something else, because you won't learn anything else after that." I'm a 3rd degree now, and I'm still learning. I do agree that I might have a more explosive growth if I learn something else, but I'm clearly not done learning.