Snag

I've been sitting at my computer for a few hours now...
I've made popcorn.
I've filled up my water bottle.
I've ambled around the internet doing "research".
I finished my popcorn.
I finished the water.
I have yet to write a word.

It's just amazing how tremendous the fear in my own head can be.
If I can be irrationally confident that every word I'll write will be awful, why can't I be irrationally confident in the opposite way? Why can't I feel sure that every word I'll write will be brilliant?

Ok, ok, ok, here goes...