Kryptonite

Everyone has their own kryptonite, their one greatest weakness. Obviously Superman's kryptonite was kryptonite. It always seems like the bad guy's weakness is greed, or jealousy, or rage. Anyways, kinda got me thinking if people know what their own kryptonite is. I honestly don't know what my biggest weakness is, I mean, I obviously have several weaknesses, but I want to know what my one greatest weakness is.