Stuck, in limbo, at the fright of starting. It is the activation energy that gets us over the hurdle of inertia. For Ernest Hemingway, writing one sentence motivated him to write more and more.
Do not worry. You have always written before and you will write now. All you have to do is write one true sentence. Write the truest sentence that you know. So, finally I would write one true sentence and go on from there. It was easy then because there was always one true sentence that I knew or had seen or had heard someone say. If I started to write elaborately, or like someone introducing or presenting something, I found that I could cut that scrollwork or ornament out and throw it away and start with the first true simple declarative sentence I had written.
However, his other writing trick took advantage of intertia. By pausing what and putting aside his next idea, he could guarantee he had something to play with the next day.
I always worked until I had something done and I always stopped when I knew what was going to happen next. That way I could be sure of going on the next day.
Action begets action but the breaks also serve an important purpose. As Albert Camus wrote: “Idleness is fatal only to the mediocre.”