I'd recommend checking out mild nootropics used by other cultures on a daily basis. Slow-burning 'highs', like the kind you get from South American maté, seem easier for my body to handle than the steep and sharp coffee buzz. There's also the obligatory meditation plug, but it's probably pretty reasonable to assume that anyone interested in changes in subjective experience has given it a try already.
I'd recommend checking out mild nootropics used by other cultures on a daily basis. Slow-burning 'highs', like the kind you get from South American maté, seem easier for my body to handle than the steep and sharp coffee buzz. There's also the obligatory meditation plug, but it's probably pretty reasonable to assume that anyone interested in changes in subjective experience has given it a try already.