Recently I have been following the work of Paul Aspen. He runs an outfit called Civilized Animal Productions, which has been putting out a video every Sunday for at least the past month. I've been enjoying his videos very much, I've talked to him personally, and the man is very helpful when it comes to organizing content output.
This past month, Aspen's been discussing a writer's time management.
One of the chief things I noted right away was when he brought up how writers have different energy levels for their writing. For example, in a day, you might have only so much time for Grade A "pure creativity" content writing. But you may burn through that after a while, and by the end of the day, you only have lower grades of "writing energy" that are only fit to be applied towards blogging or marketing efforts.
I'd recommend checking him out. His website for Civilized Animal Productions can be found here. You can also follow him on Facebook, as I have been doing, and watch his Sunday podcasts. He's been quite helpful to me, and I would recommend him to other writers in need for some external advice.