brdobu,
You sound like I was. I never missed a day at work either, but I know I looked (and felt) like warmed-over death quite a few times. I've learned that's not a good metric to judge if you have a problem or not.
Do you have a problem? You wrote: "I'd like to stop, even for just 2 weeks to prove I can." Well, if you can't stop for two weeks there's your answer.
Good luck, and please post some more.