L theananine for me to, works great though consult a doctor if you need.

Mindfullness/quiet thinking - its important to understand youself to help calm down

Lots of water can help regulate your system better

Having it regulalry and slowly more and mor. I used to get anxious on coca cola. But i started moving to a small coffee, then a medium and now a large usually doesnt give me anxiety unless i have a strong shot