Three things: (1) Not retaining good exercise habits through my 30s and 40s. I did way better than most, but still went through too many periods - sometimes o

Three things: (1) Not retaining good exercise habits through my 30s and 40s. I did way better than most, but still went through too many periods - sometimes over a year - where I hardly exercised at all. It's really hard to pick it up again when you're 50, but really important too. It hardly even matters what kind of exercise you do (cue all the weightlifting bros jumping in to disagree) so much as that you do something. (2) Buying a house. What a pain. The purchase price is just the beginning. Then you have to factor in property taxes and insurance and constant maintenance that's both a cost and a huge time-suck. The financials would have to be way more positive for it to be worth it, as far as I'm concerned. (3) Getting involved in a project with crappy code and too many developers constantly making it worse. Life's too short. Even if it's not as directly in your area of interest, or not as outwardly successful, working on good code with an upward quality trajectory is better for overall happiness.