Ugh. Can't sleep again.

I just can't seem to be able to fall asleep these days. I wonder why. Is it a stress from my masters thesis assesment coming up around the corner? But I strangely don't think of such things at all to consider it as a cause of my sudden lose of appetite for sleep.
The best thing I can do at times like this is to read and write without stopping, about variety of nothings and mutterings of no significant value or insight. Just random noise of mind coming out through the keyboard and terminal in front of me.
What to do what to do. I'll write something else a minute or two later.