More and more I find that to do any substantive writing, I need extended blocks of distraction-free time --- no IMs, minimal email activity, no dips into Facebook or Google Reader, no face-to-face interaction with anyone I know (the postman doesn't count) and no phone calls of consequence. SMSes are probably the only minor interruptions that won't derail my writing entirely.
Needless to say, no social plans too.
Lately I also find myself unable to write in the morning till the brain has had a couple of hours to warm up. So I've had to wake up earlier (my alarm is set for 7 a.m. on writing days), so that by the time I'm done ploughing through the morning news, fun reads and administrative emails, I can still pack in a few solid hours of writing before the stomach demands a lunch break.
My self-imposed writing lockdown has prompted one friend to email me to "check in" --- I suppose, to make sure I hadn't fallen and hit my head, or passed out from a lack of food or anything. Ironically, he sent that email today, when I was completely not locked down.
I'll be resuming life as a hermit tomorrow.