>If you can get in to a positive feedback loop (e.g. an activity that leads to positive thoughts that lead to more of that activity) and _then_ start amplifying

>If you can get in to a positive feedback loop (e.g. an activity that leads to positive thoughts that lead to more of that activity) and _then_ start amplifying those signals, then these drugs can do wonders. this is how alcohol works on me and why I never drink if I'm not in a good mood. But I'd be careful about generalizing what effects drugs have on people.