I've kindof been on a journey of doing less and less stuff that is bad for me since I was about 20.

The only recreational drug I do is chamomile. No alcohol. Not even caffeine. No fast food. Nothing with added sugar. Very rarely anything with any significant mount of natural sugar. My rule of thumb is nothing sweeter than a tomato or red bell pepper.

(Full disclosure, sugar gives me really bad acute symptoms. So that helps the motivation.)

I maintain a weight not terribly far from my ideal weight most of the time. It's getting close to the holiday season now (Thanksgiving is basically Halmark brand hedonism in the U.S.) and I'm loosening my restrictions a little bit and indulging in things that are a little more caloric. I bought some almond butter the other day. That's very caloric to the point that I don't usually eat it, but I'll go slow on it and cut it back out around January 2nd.

Lest you think I'm some kind of saint, I'm a lot better at not doing things that are bad for me than at doing things that are good for me. I don't maintain a regular fitness routine, for instance, which is very far from optimal.

Edit: Oh. One amendment. About twice a year, I'll do grocery store sushi. (Usually a rainbow roll.) And I think it's fair to say those have some added sugar. And when I eat at restaurants, I mostly avoid places that don't have things on my diet and then always get the thing on the menu that's most in line with my diet, but I'm usually not strict about checking the ingredients for things like added sugar. Whatever the case, none of the things mentioned in this amendment ever cause me any noticeable guilt.