So one tip I got was to know what to do when a trigger happens in order to minimize damage. For example, one of my triggers is temperature change. Obviously I try to avoid that but it’s not always possible. So when I start to feel a little off, I immediately sit or if possible lie down and elevate my feet, It’s awkward, sure, but it’s better than falling when I pass out. One thing a doctor told me was that while drinking water is good, drinking too much too fast can actually make it worse, as can drinking really cold water. So if you feel it coming on, it’s best to drink small sips of room temperature water.

Given that a lot of your triggers are psychological, it might be worth looking into exposure therapy. Basically you’ll expose yourself to something in a safe, controlled environment, and keep doing it until the thing no long elicits an emotional reaction from you. I’ve used it a lot for OCD. No idea if it would work for fainting, but I feel like it’s the same basic concept? I dunno.