I wish I knew how to manage my stress better. I'm not sure if it's actually possible to control one's physical reaction to things; you can discipline yourself to bear it, but I don't know that you can stop it.
If I weren't so torn, my stomach might behave.
If I knew the answer but executing it was less of a deal, I might not double-over.
If I were less perceptive, maybe I wouldn't burn a hole in myself.
Mostly, it would be best if I were less easily stressed.