I was wondering what other causes there could be for lack of concentration, lack of motivation, tired all the time, tired during the day, having trouble getting to sleep, waking up early and before I need to wake up, and othere symptoms along those lines. also, I have had heartburn, diarrhea and constipation after many meals, eating paper, thirsty and hungry although I eat and drink the right amounts each day. what could be the potential problem?

You might not be depressed, but you've got typical signs of depression. the two are different, you know! I'll put a link below that gives you more information about depression.

It could also be a physical problem – have you had a check-up lately?

I've got all the symptoms you listed (except eating paper?!), but mine are all part and parcel of Fibromyalgia.

Your best bet would be to go to your doctor, explain the problems you're having, and let them take it from there.

I hope you're able to figure out what the problem is, and get it straightened out.

Good luck!

Have your thyroid checked. I had those symptoms and I was diagnosed with Graves Disease.

I agree that it might be Grave's disease. see your doctor and get tested. You need free T3, free T4, and TSI blood tests.