well it means you feel you lack in other areas of yourself.
actually not right now that much but hey, I learn more and more about myself everyday.
if I am being honnest with myself, it's clear that I started bodybuilding because of insecurity. I was skinny and it was not a good sensation
now my size doesn't bother me at all, a couple of years back if someone told me " hey did you lose weight" I would get depressed