As an INTJ, I am intrinsically motivated. I do not look for help from outside world to make me want to do things. I have an innate desire to constantly grow. I draw motivation directly from my goals and my vision of myself. I synthesize a strategy and make lists.
However, since there are three extroverts to one introvert, most of us do require a social aspect to motivation and to keep disciplined. According to this article, "temptation bundling" is the answer to our prayers.
