While the start-up versus corporation question is a vast oversimplification of options, it’s a useful exercise in thinking about ourselves as professionals and the environments in which we prefer to work.
You’re staring at a blank screen unable to think of what to write and you are trying to stop your mind from getting easily distracted. Remember that writing is an art, not a science. We have all wrestled with writer’s block at one point in time and each victory is different.