I don't have it in me to write today, but come hell or high water, I am writing!
Part of it is because last month, I told my most admired coworker that I write every single day, no matter what.
I doubt he's ever even gone to my blog. But I don't want the possibility of him visiting and seeing that I'm not a person of my word.
Similarly, earlier this year I told a respected twitter friend that I was thinking of writing daily, and I kept it up, and a month later he visited and told me he was impressed that I actually did it. I was like, "oh shit, people actually notice when I stick to the things I say I will?" From then on, I wrote regularly.
If I had never told these people I admire that I would write daily, who knows if I'd still be writing at all? I probably would have let myself slip one day, then two, then one week, then one month... you get the picture.
I have something new I want to accomplish in the next few months. I haven't committed to it with myself or anyone else. But when I'm ready, I will tell people who I couldn't bear to disappoint. I think it works.