I've been like that for as long as I can remember, too. First, it was reading books and playing on my Game Boy Colour. Then it went to reading books, drawing, DSLite and watching TV with headphones in. Then it evolved into DSi and the previous and nowadays I'm up 'til late behind either my computer or laptop, doing whatever it is I'm doing at the time. I still get 6-9 (not a joke this time I swear) hours of sleep per night, but my schedule is just shifted.
It depends per person. I'd say that 6 is a bare minimum from personal experience and that 9 is the absolute tops you should go. I noticed that when I hit my teens, I required more sleep than before. This is normal. I'm still in my teens, at the very limit of them, so I guess I still need those 8 hours to be comfortable. 6 is fine, 5 is too little. 9 is stretching it but over 9 is definitely too many. I get more tired if I sleep more than 9.
I eased into sleeping for around 6 hours after having a very regular schedule of sleeping for only 4 like you do currently. I had those 4 hours of sleep on a regular basis around the same age as you, actually. I had frequent recharges though, days in which I'd sleep some more because I was really, really tired. I still have those if I pull two three-hour longs in a row.
Your body will tell you what your limits are. But I'd try to settle yourself into a 6-hour pattern slowly but surely. I know how tempting it is to play that one more game or read that final chapter, but try to relax your mind and empty it. Just lay down and feel the softness of your pillow, the comfort of your bed, the serenity of the darkness around you. And sleep.
(o god i'm nodding now right behind my monitor. I guess that was effective then)
RRT in-line command returned error... tracking back to cause
