everyone says eat and sleep. That's crap. Such a generalised comment is no use. Eat about half of what the diet people tell you, as when you eat too much (as much as they recommend) you feel full and lethargic. Try eating more fresh fruits, go for a walk/run in the morning and a run in the arvo. The oxygen will stimulate your brain and make you more interested in whatever you're doing. Just don't waste that concentration on tv or msn. also, find something that inspires you no matter what mood you're in. I can rely on Legally Blonde to get me motivated. While it may seem superficial to some, Reese Witherspoon's sheer enthusiasm is infectious and always makes me want to study; no matter what time of the day or night it is. Also, if you find you're getting bored with a subject, change. Of you find you can't concentrate, go to sleep and set your alarm for 3 or 4 hours earlier than you would normally wake up. If this sounds unappealing, ring a friend for a QUICK chat, but then get into it. Doing any if not all of these should help atleast a bit.