Fitness is a good idea, but I would suggest specifically to try martial arts, particularly anything with grappling. Because that literalizes envy: you have to b

Fitness is a good idea, but I would suggest specifically to try martial arts, particularly anything with grappling. Because that literalizes envy: you have to be face to armpit with someone who might be better than you, and it's not a video game or something where you kind of stay detached in your chair and dismiss it like every online troll: like, you can still make excuses like "well they're just stronger than me" some of the time, but sooner or later you face the guy who still smashes you despite being too small or too fat to be threatening on paper. And then you have to say "thank you" and go at it again, because if you're always causing a scene around your sparring partners and pulling risky shit you'll probably be kicked out. So there's an affordance of respect that you don't really see in other competitive spaces until you reach a very high level. Often the worst people in martial arts aren't really training, they just show up to a tournament thinking they can pull some kind of "gotcha", and while they do sometimes succeed in injuring someone, the system as a whole catches them quickly. And you're in a space right now where you are probably ready to try to take that on and seek maturity from it, without aiming to go compete or even make it a longer term journey. The point is to get in a space where you are confronted with losing and practical ways of dealing with it, and that's something that carries over easily to other activities and allows you to understand what you want out of them with some clarity and perspective.