What really made a difference for me was starting very very very very very small, with almost no ambition. That is truly the most important point in my article, but I am not sure if I managed to communicate it clearly.
The idea is really to say something like: my goal is to write for 5 minutes, and if that is too hard, I do 2 minutes. And if I manage that, I consider the task done and I can pick another one, also 5 minutes long.
This gives me a real sense of accomplishment and helps me focus on what I have already done instead of everything that is left to do.