Pika u can do it! ur taking o levels this year or next
year?
if next year still alright, because last year i got the same
feeling ur having. Thats why I flunk badly.
Then this year, when i get start to revise, pace very slow, because
my engine still not warm up yet. But now, i'm slowly getting use to
it already.
Tell urself u can, don't surf SGF too much. Just now I wanna surf
SGF but I tell myself to continue study.
If this doesn't help, maybe u can try seperating ur computer table
and ur study table 
