Who am I in the face of "I can't" when uttered by others and by myself?

You say "I can't" and my instinct is to call you nothing, but then in a flash I am pissed off, and yelling counterproductive darts into your neck, ears and spine...and you shut down...but then I try on nice and you know it to be false somehow...or perceive it as weak, and indifference becomes your greatest weapon against me. But I shrug off the tools I want to work so bad, and I lay it all bare and ask for what I need, or ask for what I want, and that's it, and for some reason you respond...the world could be my ally if I simply asked...sure there are those capable of betrayal, but most people do not seem to be double agents, so they are either really good at what they do or they really aren't out to ruin me.