Great Topic-OP. FIRE in 3-5 years and hope I'm not breaking rules posting on here but wanted to give my inputs that this helps even when working:
Meditation started me on this path and I've done away with the following:
* I gave up the Football and I have so much time on weekends now (and such low stress). I never realize how much stress I had being a football fanatic.
* Avoid Most News , especially politics.
* Gave up unhealthy food (This one is the toughest as I never knew how much of my social interactions with friends were around food). I go out less and interact a bit less socially as I do maybe half of the happy hours and football games at Buffalo Wild Wings. On a positive note, I started some hiking and other weekend activities with the same folks to get some healthy social time in and its slowly growing on people. My body feels so much better.
* Cars - I get a bug to get a fast sports car - Porsche or Maserati every few years and then barely drive it and end up selling it. Now, I've realized I don't really need these as they take more maintenance and I get just as pleasure out of my BMW and I don't have to worry about scraping it on a curve or parking on the street ,etc.
* Care a lot less about what other people think - In the past, I'd freak out about having the house Uber clean for parties and having all kinds of different foods. Now, with kids, I've realized with kids, Life happens. All our friends are good people and learning to focus more on substance and find and phase out my own anxieties.
Next up is learning to compartmentalize and leave work at office