Jealous of what? Everything you mentioned is within your power
and trivial to achieve. If you miss going to the gym, the outdoors, reading, then go do those things! Go do any of them right now. If you can be on HN, you can pick up a book or go take a walk outside.
I’m sorry to say, and I say this without any judgement and as someone who can relate, but you’re describing yourself as an addict. You don’t have to pursue all those projects. Most to all of them don’t matter for anything except getting you your temporary “fix”. I understand it feels hard to disconnect, but that’s a purely psychological barrier, the physical action (not doing something) is tremendously simple.