I'm currently writing a book about finding more bliss and joy in your work - whether you have a career or a business. I'm about 14000 words in and progress is slower than I'd like! (A little more focus would move me forward a lot faster!!)
This is all too true. I find that my mood also affects how well I write. Every now and then I get an idea and can sit down and write ten to fifteen pages in one day. Usually I write about five pages a day.