Many writers have found that the most creative and best time for them to work is as soon as they get up in the morning. I work early hours, so getting up early, before work, just isn't gonna happen. For me, "as soon as I get up" translates to "as soon as I get home from work".
If I get writing as soon as I get home, it's fairly easy for me to make my writing goals. Especially if I start writing first thing, before any distractions manage to take root in my mind. Online distractions being the chief culprit. These can ruin my entire days production.
So here is the one step to higher output - get up, and get going writing. No internet, no mail, no morning cartoons. But have coffee, for the sake of all that is sweet and holy. We're not barbarians.
This works even better on a day off. You will amaze yourself with how much you can get done if you start writing first thing and keep going until you're ready to keel over. Or lunchtime, whichever comes first.
Make your daily word count the first thing you have to accomplish, every day.