One of the hardest things you'll ever do is give yourself permission to be in pain of any kind. There's a reason we have survival instincts, so that we don't die. That goes for humans, animals (redundant, I know), all the fishes in the sea, everyone. Some researchers even say that even plants feel pain and a cucumber will scream when you cut it. (And some others say that's crap because they have no brain or central nervous system.) The point is, we're all wusses. And emotional pain is the worst.
— Anne Clendening
avoiding-painemotional-paininstincts