I'd rather be sleeping (i.e. workout woes)

As I mentioned in my first post, I often think that if I had more time (or if I quit my job), I'd go to the gym every day.
It's hard enough with two kids, a full-time job and a long commute to work out regularly, let alone every day. Living in Houston makes it even harder. The food is cheap and good, and walking is minimal. When I lived in Washington DC, I walked 15 minutes to and from the train every day. I'd throw in 1/2 hour walk during lunch, and I never had to join the gym. But Houston is different. I drive to and from work and though I walk during lunch, my desk job keeps me glued to my desk otherwise.
My goal this year has been to get to the gym at least three times a week. Actually for the most part, I've been able to do that. I should add that I actually haven't lost any weight yet, but I knew that I wouldn't lose weight going just three times a week. But my goal is to work towards a healthier lifestyle. Now half way through the year, I've decided to kick it up notch and try to work out four times a week.
This has been a challenge. I'm used to going to the gym during lunch and prefer that. It gives me a break from sitting. But my work schedule is unpredictable, and I never know if something will pop up and prevent me from going. So I've started waking up a bit earlier than usual and heading to the gym in the morning. It's been good. The hardest part (and this is so hard, really hard, in fact the biggest hurdle) is not hitting the snooze button and getting out of bed. Once I do that, the rest is pretty easy. Ofcourse, it's only been a week. We'll see how it goes.