[jumaro]

When I'm anxious, breathing meditation before sleep helps a lot. Breath in like you normally would, then pause a little, breath out as slowly as it's comfortable. Again a little pause, then start again with breathing in as you normally would. 15 minutes of that work wonders for me. It tricks the brain into thinking you're save, because only when you're relaxed you breath like that normally. When in danger, your breath is rather fast. The key thing is to breath out more slowly than you breath in, but don't overdue it. If you don't get enough oxygen, it will surely not help to battle anxiety. Maybe it's helpful for someone else as well.

[CharlesW]

Not sure if this is exactly the same, but it seems reminiscent of "box breathing": https://www.healthline.com/health/box-breathing

[jumaro]

you're right, it's similar :)