[contingencies]

Random naturalistic option: After quitting smoking I found drinking cocoa with hot water (not milk) helped me to calm down and concentrate.

Obviously if you're flipping out properly it's not gonna help, but it does appear to have a surprising effect for the tamer challenges in life. I hadn't expected or heard of any such effects, but consistently felt so much more relaxed and focused after drinking it, which piqued my interest enough to look it up. There does appear to be some nebulous positive medical review of its effects in areas like blood pressure.