This thread has a lot of interesting points that I know I have pondered more than once.

I can just say what I've been attracted to and admired is the sense of quiet self-assuredness in a man or woman.

Even feeling doubtful about a particular situation, he or she could handle himself or herself gracefully.

I used to think I wanted a superhero for a Master or Mistress, but of course it's not possible, so I've learned to reconcile (in my own head), accept the human errors and self-doubts He or She might have and realize that those things do not take away from the ability to hold me in the palm of His or Her hand.