Some days I have time to write and post something longer. Other times, like now when everything is crazy busy, I'm reduced to just some weird links. I have an idea to post about how busy I am, which will probably be titled "Sisyphus", but I'm too busy to actually write it. Funny how that works.
Anyway, the general idea is to write something every day, preferably a longer piece, but even just one sentence helps keep the momentum up. Once you've missed a day, it's so much easier to miss another — you've already broken the streak, so what does it really matter? But the longer the unbroken streak gets, the more motivated you are to keep it unbroken.
You learn to write by writing. I've watched someone here on LJ evolve from having funny stories to tell to being a published author. I don't know that I'll ever get that far, but one thing is sure: if I don't write, I never will.