Diet and discipline, but in more than just the traditional sense of those words.

Diet: I eat healthier food after replacing most (if not all) junk food with better options, but I'm also on a much healthier media diet by replacing most (if not all) mainstream media with carefully self-curated newsfeeds.

Discipline: More specifically exercise discipline. Apart from re-starting regular physical exercise after years of neglect, bitcoin has taught me to also regularly exercise my critical thinking skills.