Confidence & Paranoia

My arm is kinda sore :S i know i shouldnt have done it, and i know i need to stop, but it just got to being too much tonight. i know that isnt a good excuse, but its all i have atm.
For now, the main queation that is in this weird little head of mine is whether or not i should go to work today, coz i dont know if people there will notice the new marks, be suspicious of the bandaid on my wrist, or if i am just being some sort of paranoid psychopath.
According to an episode of Red Dwarf, every person is made up of two people, your confidence and your paranoia. Your confidence is the part of you that tells you that ur cool, that u can succeed at what your doing, and that everyone loves you. Your paranoia is the part of you that says that your ugly, no one loves you, that you will fail and that your a looser.
Somehow i doubt that that theory has been proven, but anyhow, i feel as though my paranoia is taking over, and i dont know what to do, coz unlike Lister, i am not sick and dillusional, or at least thats not why i am feeling like this.
Anyhow, i think that is random enough, and i have rambled on for long enough...