Ever get a day when you feel absolutely down and useless?

Yes, I do and don't feel bad about it because I think everyone feels like that at some point or another in their lives. I've had the same cold for close to two weeks now and I think it's finally on the retreat but while I was sick I came to the conclusion I could not have a successful life if I had chronic fatigue syndrome because this is what I imagined those people feel like everyday. I'm just not cut out for it.

I feel so, when I am ill or the weather is not good,then want to have a sleep,and I don't want to go to work,then I feel down,and I often remeber the day on compus,I didn't go to class if didn't want to,but now,it could not the case because I have a work,and woek is more important,if I do a bad work,I may be expelled,then I should work harder,even when I feel not good.