[graeme]

> but as with many low income people you may have to work hard for money and have no physical energy left over for such feats

People love to bring up edge cases but most people on that situation aren’t on Hacker News.

Vast majority of audience here is in a position to improve their energy.

And I’ve had health and digestive issues that impair me more than average. Guess what? By controlling my environment and inputs I can have a massive difference in my own average energy levels

> it's simply not possible to choose to be positive, for instance

I fundamentally disagree with this statement. There’s always a choice. Do you speak from experience or are you assuming what others with worse physical challenges than you must logically feel?

(I draw a distinction here between acute and chronic issues. If your spouse has just died or you just broke your leg and are in excruciating pain, positivity has little role. I’m talking about longer run)