How can I concentrate on my studies more?

Why can´t i concentrate for studies anymore as I used to do before I left college, how to overcome this?

• About 3 years ago I was on college, and on that year I become very depressed and not motivated with everything in my life so my grades started to drop, also my father was very sick so I decided to go back home find a job and help my parents. I started working at a factory as a machinery operator and quality controller (very repetitive tasks) working from 4:00pm to 12:30am, every day when I arrived home from work I could´t sleep so I started to spend the nights on the Internet or watching TV, only going to bed at 5 or 6:00am. When the economic crisis started I was placed at the 1st shift, working from 7:30am to 4:00pm, and because I could’t sleep at night I was only sleeping about 1 or 2 hours per day. Now that I’m not working anymore and I returned to college again the new challenge is that it seems I´ve become very stupid and dumb and I can´t concentrate myself, I can’t even read a book without becoming very bored at the first pages or remember something someone said to me a few minutes earlier, sometimes when someone asks me something, is like my mind goes blank even if I know the answer. Can anybody help me with this, or if you had a similar experience how do you overcome this state of mind?? PS: sorry if my English isn´t the most correct.

• Answer:

  i honestly don't know the answer, but I'm having the same problem. if sleep seems to be your main problem then you should work on that. search "sleep hygiene" that might help. also being out of a learning environment for a while may have caused you to just get used to that kind of lifestyle. personally, that happened to me in as short of an amount time as summer break. and the not remembering things, people, etc right shortly after you've heard/seen them. well, i have that too. i don't know what the deal is but hopefully it'll stop for the both of us.