This is the primary distinction between having a brain driven by the need for more dopamine or one that is functioning happily on serotonin.These two very different neurotransmitters predispose your brain to developing specific behavioral styles. One leads to progressive brain damage driven by the always immediate need for more...Dopamine...in others words an addictive personality, and addict. The other is about the contentment of long term goals that require deferred gratification and joy of...