So I've had two things that kinda go hand in hand that have really made a big improvement in my quality of life:

1. I started working out. During the pandemic lockdowns I picked up a basic fitness routine called Hybrid Calisthenics (they no longer list the basic 5 day routine I was doing but still brilliant explainers on that site for starting a new routine!), and went from struggling to lift 50lbs to being able to perform my first pullups ever. I changed jobs and lost my time for workouts but then I went and took my old bike for a tuneup to start riding it again with the goal of biking my kids to/from school and immediately realized how out of shape I was, so that became my new goal (and I rapidly fell in love with cycling) then I saw an ad for a 4th of July 5k and went "oh that's like a quarter of how far I ride my bike I should totally do that!" And now I run 5ks too! The old me could never do that and would never have dreamed of doing any of these things but now I have races to look forwards to!

2. I've started a long term process of reducing my screen time. I've noticed how no matter what I'm doing with screens it just isn't making me happy and everything off screen gets neglected. So I've started focusing more on trying to pick up more hobbies to do with my hands. I've started building a model railroad, I've been reading a ton of books (I think about a couple dozen books or more in just the last 12 months) and not spending as much time soaking in news and doomer takes on the internet has greatly helped me be a much happier and more realistic person. This one's an ongoing struggle though. The screens are right there and offer so much momentary entertainment (such is why I'm typing this right now) and doing stuff like drawing is really hard as my hands struggle to draw what I have in my head since I haven't really drawn in a long time. My ultimate goal is a healthy balance of screen and non-screen time during my free time

Oh and a bonus item that I didn't even think of initially: going back to college. A few years ago I decided to go back to college at the worst possible time. I had a baby on the way and was working full time, but I made it work. Even when my wife had to quit her job and I was the sole income while going to school full time, I threw all of my irons into the fire, pumped the bellows as hard as they'd go and worked myself to the brink of burnout and got a degree, immediately landed a job paying twice what I was making before with way better benefits and coworkers, a super chill work environment and through an insane series of events I now only work about 30 hours a week fully remotely and make enough money that not only can my wife be a stay at home mom but I could afford to go on my first international trip last month and have 2 more (much smaller in scope!) trips planned for this year still. I seriously never thought I'd be able to realistically afford intercontinental travel before, and now it might well be a thing we do every year or two!