There are rules and guidelines. I know drinking alcohol to suppress anxiety is a very bad idea.
Sugar can trigger anxiety. Caffeine can, too.
But one cup of coffee is definitely very good for me in the morning.
Two cups and I feel like I can see through time and can't stop talking; three cups and I have an anxiety attack.
Everyone is different.
One thing that always helps is respect. I am grateful that my therapist had it.