1. Meditating (not very good at it, but getting better and it's seriously helping)
2. Blocking Reddit on my router, blocking political communities in Lemmy
3. A consistent, normal sleeping schedule (a bedtime routine is more important than a morning routine, imo)
4. Yoga every morning to help my body work with me throughout the day
5. Reading more books
6. Getting outside more often
7. Paying closer attention to the thoughts that cross through my mind and stopping them when they're not helpful - this also helped me realize the underlying anxiety that's been with me for who knows how many years
8. Drinking more water

Edit: Oh I also:

• Quit drinking alcohol, almost at the 1 year mark
• Quit smoking weed, almost at 2 months fully sober now

I did these things one at a time, not everything at once. Mostly just sharing what I did here, but if you plan to do the same - listen to yourself. Start with #7 imo so you get a better idea of what you're up against. If it feels like too much, take a step back and slow down. You're not failing when you do this, you're helping your future self not fail entirely.