The humblest, nicest, friendliest instructor I've ever had - in MMA-style kickboxing, generally a pretty macho area - was the one with multiple world championship belts.
It's frankly amazing how broadly consistent this behavior is, martial arts, weightlifting, video games, network engineering - across the board.
The humblest, nicest, friendliest instructor I've ever had - in MMA-style kickboxing, generally a pretty macho area - was the one with multiple world championship belts.