Is there something wrong with my want to be sick?

I don't know why but I very commonly have the feeling of wanting nothing more than being sick. It sometimes gets to the point where things that I know are healthy for me, drinking enough water, eating good foods, sleeping right, dressing warmly for the cold, things like that I just start avoiding. I don't understand what drives me to do it. I could blame it on wanting attention, but even now all alone I still want it. I hate being happy when I see that my temperture is high. Anyone know why, and can help?