Nobody wants to hear it: exercise.
Walk up a steep hill for an hour or two a day. Rate your mood every day. Watch the results form clear as day.
I used a mood tracker for over 5 years. Every May I would hike a nearby trail every morning. Looking at 5 years of mood tracking data, I was always happier than average every May. It lasted into June. Was gone by July. Every year.
If you push your cardio to the point where all you can think about is your next breath, it forces you to meditate. It forces presence. It trains you to break the ruminative thought cycles.
So, again, no one wants to hear it. But exercise is by far the best solution to anxiety. Plenty of research backing this up.
I know the article says depression. It's a meta analysis. Anxiety is also covered in some studies analysed here.
Edit,: literally the reason I prefaced this post was for all responses received this far. We've found the folks that don't wanna hear it. I would t have opened with what I opened with I'd the rough percentage of naysayers weren't the exact humans I am talking to.
Get a clue. Go walk up a hill. I'm not here to argue. Write something to the folks the conducted the hundreds of studies that contributed to this meta-analysis.
Or don't, and continue to insist you're special.
It's all you.