> The important thing is that there should be a space of time, say four hours a day at least when a professional writer doesn’t do anything else but write. He doesn’t have to write, and if he doesn’t feel like it, he shouldn’t try. He can look out of the window, or stand on his head, or writhe on the floor. But he is not to do any other positive thing, not read, write letters, glance at magazines, or write checks. Write or nothing.
He commented somewhere that it works on the same principle as school - you can't force children to learn, but if you prevent them from doing anything else, the bright ones will learn just to stave off boredom.
1. Force yourself to sit here and do nothing else until the task is done. The Chandler method, which requires a great deal of discipline.
2. Keep telling yourself "I'll start just after I check Hacker News / Twitter / watch one more episode on Casualty". This means you never achieve anything and feel forever guilty and worthless.
3. Put the task to one side for now and do something else enjoyable and marginally useful. You make progress in other tasks, feel valuable, and only a little guilty.
Structured Procrastination is the third option. If you can't manage Option 1 -- and who can? -- it's better than Option 2.
That may not work for an author who's lacking inspiration, but in my case I found that when I sat down at the keyboard to work on my book, if I couldn't think of what to write I'd just start writing utter crap for a while until it started to flow a little better, then I was usually off to the races.
Also it's a task where inspiration is involved, so if he forced himself to write every day no matter what, some of it would be worthless because the ideas weren't there. The point of his approach is to make habits that ensure you accomplish something in the long run, regardless of whether you get something done today or not.
If it works for you, go for it, but I do not work in 25 minute chunks.
It can be effective.
The challenges for me:
1. Boxing sufficiently large chunks of time that I can actually work on a project. Task-switching has immense costs.
2. Actually having a path forward. If I've yet to find a good way to tackle a problem, or worse, if I'm stymied by having been mislead as to a possible pathway (a false Bayesian prior, or similar concepts in logic/truth), it can be quite frustrating.