Ok, Sit and Write

So I have been avoiding doing my revision on my thesis, which I should have been doing it a month ago.
The deadline still 3weeks long, but I still don't have the excitement to write and revise what should be revised as my Professor said.

Hmm..

Start to write! Start to get serious! Start anything.. then I can go freely with no burden at all.

What should I do first?
Reading another literature for my past study? Nooo , I don't want to do that.
Open website, blog, or anything from the internet? It will drag me straight to facebook games..

oooohh.. such a pain.

BUT I HAVE TO DO IT! YOU HAVE TO!