why am i constantly so tired i go to sleep at 10 every night without fail am up at 7 then at work for 8 till 5.45 every day, i feel like the walking dead at work , my eyes start closing and feel like i am loosing concentration and feels like my eyes are rolling to the back of head, i NEED to have a sleep on my lunch hour so try and get half hour if i dont do this i just feel awful. been to the doctors and they said excercise , healthy diet blah blah. I eat a good diet and walk my dog every day! but even things like getting dressed, socilising and excersising seems like the biggest mission ever. I am currently on prozac (fluoxitine) and take this in the morning the doctor prescribed this as i keep having major mood swings and get very irratable, and have been on these since oct. but i have been having these other problems for a long time now can anyone suggest anything? please xx