Last week, in my travels around the web, I read an interview with an author said that she wrote every morning from 9 to noon. (I wish I knew who this was or where I read it, but I can't remember.) This struck me like a thunderbolt. Bad cliche, sorry, but it did. I realized that if I put myself on a schedule like that, I'd actually get my writing done.
Scheduling your writing time is essential. Otherwise it won't happen. Even if you're a full-time writer, "urgent" things win out over your writing, which you can always do "tomorrow."
I finally convinced myself to schedule everything (even social get-togethers), when I worked out how much half an hour's non-work-related chatter on the phone cost me. Yep, half my hourly rate. I enjoy chatting with friends, but not in working hours.
Of course, your loved ones love to derail your schedule. You'll need to train them that when you're writing, you're working.