The Effect of Emotions on Willpower

I am often asked, "can willpower overcome the effect of emotion?" My response is constantly the exact same, "emotions diminish the will power." Below is how.
   Emotions are chemical responses that take place in the brain resulting from messages presented by our senses, i.e. seeing, sensation, hearing, smelling, etc. The purpose of lots of feelings is to keep us from harm. Emotions typically come rapidly and typically without our control. Prior to we know it, we are afraid, ups