Getting into a flow state is most important, at least for me. Starting is the hardest part, but if you force yourself to start then it becomes much better. That

Getting into a flow state is most important, at least for me. Starting is the hardest part, but if you force yourself to start then it becomes much better. That being said, some people don't ever seem to hit that flow state or have trouble hitting it for certain things. In that case, I would advise doing something like a Pompadour clock type of thing, 30 minute sessions (or whatever time limit you want) of continuous work, then break, then another timed session. Like others have said, a lot of it is just developing the habit of doing it. Habits are defined by cues, so you want to be in an environment that is associated with work, so you should avoid trying to work at home or any place you have associated with leisure.