Have you ever heard that one? Have you ever told that to someone else? It's really not a good excuse when it comes down to it. I can think of plenty that are better, including: the house was on fire all weekend, we were hit by a tornado/hurricane/flood/hail storm, my mother-in-law was in town, etc.
We really are responsible for the choices we make. If you think something is more important than losing that extra 8 pounds, getting out of debt, or developing a plan to do the work you love, then you just made the decision to stay right where you are for a while. You, and only you, can change that whenever you want.
Here's a good place to start... unplug your TV. With just 4-5 hours per week you can completely change your family tree.