Best way to relive the tight anxiety chest pain?

I've been dealing with travel anxiety for over 4 years now and it's taking over my life. I don't want to go on any meds because I've d9ne all that, and they just drain your personality imo. I've had prozac and an anti depressant before.

Currently trying a combo of ashwaganda and magnesium citrate in the evening and then L-Theanine before i travel, but honestly it's not working. The day before i need to travel, the feeling in my chest creeps up to the very day i need to go in and its just tight and im feeling like im on the verge of having a panic attack.

This feeling, creates the panic....im looking for something that puts me in a mellow state for like an hour, just to get through the journey. I've tried music, reading all that...having ADHD makes it 10x harder to focus so those things don't work. Only thing that works is for me to call someone, but those people aren't always available.

I'm honestly open to the most unhinged suggestions!

TL;DR - Looking for a fix for anxiety chest pain for travelling, something to really make me mellow.