I am chiming in late on this one, Jack, but I have two super powers. One is stamina for work. I can work 60+ hours a week for months before succumbing to exhaustion and, even then, a couple of down days is all I need to recuperate. This super power is often a curse as people have come to expect and demand insanely long work hours from me.
My second super power is compassion. I can feel and understand the pain and suffering of others more so than my own. Again, this is a double-edged sword. I take on the problems of others while ignoring my own. This power is also strengthened by my stamina power. Together they often result in an emotional and physical overload, leaving me depressed and disillusioned. Rarely do I receive as much as I give and, eventually, I resent the imbalance. But, give me a bout of resentment and I jump in the fray again. Stupidity or determination?
Unfortunately, both powers are also weaknesses as are almost all super powers as documented in countless superhero movies.