I'm working on myself through my work, if that counts?
I'm a staff-level SWE. I took the last year off of paid employment because I felt anxious and stressed even though everything was, objectively, fine. I had some poor health habits that I was staunchly ignoring and a project I was deeply vested in at my job was ripped out from under me. The meaning I ascribed to that project was giving my life purpose and, with that suddenly missing, and with my health in less than ideal shape, my outlook on the world became dismal.
I took the year off because I wanted to try and rediscover that curiosity you mentioned having lost. I used to LOVE programming. I loved feeling like a techno-wizard making pixels bend to my will. What happened? Why did I now feel anxious and uncomfortable staring at a screen while trying to think critically? I think I got a little too lost in the sauce of the startup world and it became clear that it would take some "me time" to rebalance.
So, from some perspectives, I've been doing nothing. No significant other, no money-making job, not travelling the world or living life to the fullest... but having a project that feels meaningful to me, whose existence is moderately under my control, and that I have sufficient time and energy to engage with -- that's giving me most of what I felt was missing. Well, that and dropping a bunch of widely understood bad habits and picking up some better ones.
I want to see myself as a more consistent and reliable person. In my 20s, I had infinite energy. In my 30s, I'm finding that's only true if I keep myself away from alcohol and drugs, exercise constantly, connect with people, and, most importantly, be mindful of my physical and emotional state. If I start slipping into a rut, and don't notice it and nip it in the butt, suddenly it can take over my whole demeanor and disrupt a lot of good things I had going. A couple of days of bad sleep, coupled with a desire to keep pushing forward, can cause me to regress into drinking a bunch of caffeine. The caffeine will mess with my anxiety and mood and I'll be more tempted by unhealthy food and marijuana. These decisions start to take their toll, the effects compound, and suddenly I'm in a destructive cycle where I see myself being less and less each day. I start to hide from myself. All these issues were present in my 20s, but they never really seemed to be a hindrance. I could just roll with the punches and remain proud of my accomplishments. Now, in my mid-thirties, I find myself frustrated (yet a little excited) to try and figure out how to keep myself running like a well-oiled machine. I want to remain proud of my consistent growth into my later years and it's going to require getting better at working with myself.
That said, I know me. I don't do well without a project that I can see myself in. It's what makes getting up in the morning worthwhile. I think it has to do with having an avoidant/dismissive emotional attachment style, or something to that effect. So, if someone were to ask me if I'm working on nothing then I guess I would always want to confidently say, "No. I am working on something, but at my own pace and with poorly-defined goals."
So, in an effort to work on myself, I've given myself a project whose goal is to help me, and others, be more consistent and present. I must admit I've taken the most circuitous route possible to achieving this effect as I'm ostensibly creating a digital ant farm which functions as a mental health companion (https://github.com/MeoMix/symbiants). The goal is to create a pet whose growth fluctuates with its owners' consistency. I want to see my ant colony thrive when I am consistent. When I am feeling good I want to see my ants take on new challenges, expand their territory, stress themselves out trying to maintain growth, build habituated pathways to foods in an attempt to scale. And then, when I invariably go through an emotional downturn, I want to see my ants yield some of their land back to the fog-of-war, hunker down and weather the storm of inconsistent check-ins and less good habits undermining my personal energy. And then, when I've sated my desire for self-destruction and re-commit to being dedicated to my goals, I want to see my ants rediscover forgotten pathways, regain their ground quickly, and act as a reminder that my emotional downturns didn't undo all my personal growth. The habits are still there, hidden in fog, waiting to be rediscovered with a little effort. I want to have this pseudo-living creature that serves as a visual proxy for how well I feel I'm doing.
If anyone feels similarly and could see themselves finding purpose through this effort - feel free to reach out. I would be happy to talk to you and help you find a home in the project. There's Discord and email in my bio. It's my first game, the scope is way too large, the code I've written is bad, and I have no strategy for monetization. You'll very likely become a worse Rust developer by associating with me :) ... but I know I want to create something that helps motivate people to continue showing up for themselves and I'm confident there are others out there who either feel similarly, or feel lost and could use help finding themselves with the right project.
I've written a lot! Sorry for the meandering thoughts and the weird upsell of a project in a thread about working on nothing... but it all seemed relevant to me while the juices were flowing. Cheers :)