Whenever someone asks what superpower I would like to have, I usually say "flight" or "teleportation" so that I could travel as I liked and visit my far-flung friends and relatives whenever I want. (Like to Michelle's to have homemade Oreos.)
However, if someone were to ask what trait I already have that could be a superpower, I think I might say that I process toxins well. That would be physical ones (for example: I rarely get hangovers or food poisoning) and mental ones (I deal with "difficult" people well).
What superpower do you think you already have?