This means,

1. Never eat out: nothing is worth it, not even all you can eat Korean barbecue! My current favorite joint is chubby cattle, but still… The 90 minute time sitting is a bit restrictive.
2. No weed, no alcohol
3. Don’t go out for coffee, just brew it and drink it at home. I actually have a new hack; I only drink a lot of coffee at the house first thing in the morning when I wake up, but after the morning, 100% abstinence for the rest of the day. I get the upside of getting a good caffeine buzz first thing in the morning to get me going, without the downside of having it affect my sleep.
4. Never buy anything, and also… The only “computer“ or device I find worth it is an iPad Pro;
5. Always buy the cheapest iPhone on the market; only poor people buy iPhone Pros
6. For camera or digital camera, I recommend getting the most compact, capable Panasonic camera, and the cheapest, most compact pancake lens. Currently the Lumix S9 ($1500) and 26 mm F8 pancake lens ($200). Never buy a loser Leica which is essentially a Panasonic Lumix with a body kit. Especially the Panasonic Lumix Leica Q Cameras. If you want a digital rangefinder just buy a used Leica M9.
7. Don’t shoot film: I think about a decade ago in 2014 2015, it was affordable, but now it is too expensive. Save your money and buy Bitcoin instead!