Yep, indeed, I did say that, and it's only sort-of true. I set aside one hour a day to write because that's what I tell myself I HAVE to write...given how arduous I sometimes find fiction, I think if I told myself that I had to write four hours or whatnot every day, I simply become paralyzed with dread. But an hour? I mean, what's a measly hour? It's nothing. So I schedule my day around this hour because let's face it, anyone can do anything for an hour. (I often use this same psychology when it comes to running or working out...I can really endure a little pain for that short a period of time, and then it's over, and then I'm always glad that I did it, right?)
I almost always designate this hour in the morning, if only because my afternoons tend to get away from me with non-writing stuff - dropping in on my son's baseball class, walking the dog, running errands, and the only way that I can ENSURE that I get my hour in is to crank it out when the house is quiet.
Now. Does this mean that I only give an hour? No, not at all. Often times, once I get started, I completely lose track of the time and devote much more. But if I'm having a crap writing day, after minute 59, I give myself an out. Again, just like a workout. You have to break a sweat, but that doesn't mean you have to exhaust yourself. On days like that, just showing up is enough.
As far as my freelance stuff, it all depends on my deadlines. I procrastinate much less on my articles, so carving out time isn't that tough. Many times, I give myself that hour to work on my fiction (or else I'll end up skipping it altogether), and then, once my brain is in the "work mode," I transition pretty easily to my articles.
I think there are a couple of reasons why this works for me: 1) I don't expect too much from myself. As noted above, anyone can suffer through an hour. And 2) I've established a pattern that really works for my mental and physical schedule: I start writing right after my coffee has kicked in, when no one is around to bother me. No excuses. No reason NOT to dive in. It's a no-brainer.