I'm curious about hypomania as a personality trait/dimension. Some people seem to have very energetic and productive baselines. This is how I like to be and my mood suffers when the world has given me nothing to do (I'm not great at self-directing). My grandfather is the same way and he isn't bipolar either.

Unlike true bipolar (mostly random mood swings) it is things in my environment that cause the elation and goal oriented behavior. In highschool it allowed me to finish two semesters of art credits in 18 hours straight.