Organizing and re-organizing can become a project unto itself - don't let it become your sole purpose.
Persistence pays off. Many writers set aside a certain time each day and make themselves write. Otherwise it's too easy to avoid.
That said, I'm overwhelmed by how much time I've wasted staring at a blank screen. I keep telling myself to just write anything but I hate seeing awful prose on the page and would rather see nothing than poor sentences. I know I can go back and revise later, but I feel like too much sloppy work affects my ability to think about the overall subject clearly. Still trying to find my workflow, I guess.