Plenty of people go on to have second or third careers. One programmer I know was a music teacher for decades. He's really good with the interns. That winning the startup lottery means you have more money and thus freedom than most, means you're also less constrained in what you choose. Which may be a good or a bad thing. Constraints are useful, and absolutely freedom is like staring at a blank page not knowing what to write. You really have to push yourself, make yourself uncomfortable in order to find yourself. You can waste the rest of your life sitting at home posting on HN, or whatever forum comes next.

There's a whole big world out there that hasn't heard of Nvidia. Go find them, volunteer at a local non profit, help people you think need your help (Alan Watts has a bit on who not to help though). A human has to have a purpose, even if that purpose is planning the next cruise destination. That sounds boring as hell to me, personally, but that's at least got my friend doing things and leaving the house. Learn new skills. Travel. Make friends in strange new places. For the love of Dang, don't just sit at home on HN.

Or do. I'm just some rando on the Internet. (This message brought to you by someone who spent a year retired, posting on HN, and is now, back, gainful employed, trading hours for dollars. Email in profile if you wanna connect.)