I stopped consuming caffeine and alcohol years ago. My ADHD, depression, anxiety and sleep improved immensely.

I don't really miss em. The only times it's a problem is when other people try to get me to consume caffeine/alcohol because people are weird about it. I'd wager a lot of people don't really need caffeine but our society really pushes it on people. It's also a wicked cycle. Once you get to using caffeine regularly it gets very difficult to operate at the same level without it.

But yeah, regular exercise, good sleep and a decent diet make it not too bad.