What training/experiences make for better scuba divers

[arcFlash]

I'll bite.

Training: Cave training is the best dive money I ever spent. I don't dive caves and didn't plan too. I took the training in order to get instruction from people who do not sell c-cards. You have to earn them. I use those cave skills all the time.

Experience: Biting the tabs off your mouth piece is worth something. After that you know what it takes to get scared.

My deepest free dive is 28 feet (Portsmouth beach, about 50 seconds.) and it was a little frightening to look up and know you can't mess up or sneeze. I don't know how you guys do it and with the risks, I don't think I'm fit to try.