What a super question. Sounds like normal determination to me. I have that kind of personality. I've always taken on more responsibility than was necessary, and things always worked out.
Perhaps ask yourself if you actually finish these chores successfully or do you quit at things? Do you meet your goals? Do you change your mind often?
To me, mania involves irrational behavior and goals that are far beyond your normal capability. They end in a disaster of some sort. Ask someone you trust to honestly tell you if you were being "crazy" or simply highly self-motivated and over-achieving. Also, is there a trail of chaos behind you?
I am not bipolar, but read all the posts here in an attempt to help my ailing husband. That doesn't make me manic- just eager to learn! Anyone sincerly dedicated to a cause could come across as mildly manic. But that is the personality required to handle difficult tasks. Realize that dedication can be life-long and doesn't flip-flop foolishly.
Best wishes. APG