dont mess with hardware if you can fix it in software

that study is an example of a horribe broad brush approach that gets pursued because its a low hanging fruit. physcial quantities are easier to objectively measure and present and subsequently selling tanglible pills is more marketable and controllable

you can influence your neurotransmitters, endocrine system, and behaviour with thoughts and habits, for example: fantasize porn, your passion projects, see what people see when they see you, first person view in a roller coaster, check out youtube climbing scaling radio towers and skyscrapers, etc.. duh just about any engaging movie or book

manage your attention wisely

social phobia/anxiety arises from habitual limited perspective misinterpreting the environment. in some situations fear is appropriate healthy and helpful, the key solution is to notice the difference objectively

see yourself, your surroundings, other people, from an external reference/point of view, see through from outside the building, from the roof, maybe perched on top of a lamp post, birds eye view, whatever, use your illusion