About the spelling stuff: dopamine is a well know component produced internally, as others like estamine, oxytocine etc. Be as it may, when we tell stories about ourselfs, as you said in negative way, we release in our system KEY-LOCKER in the cells. The neurons are the most receptive of our cells, the second best is the imune cells. We vibrate, as energy and work by resonance... so we should try to live in max potential of excitement we could active, until we cant...