Can you call something a “habit” if, when your routine is disrupted, the “habit” gets neglected?

I don’t think so. Habits aren’t habits unless they have become almost automatic. If something as small as a routine change stops a habit then it wasn’t a habit at all.

That’s bad news for me. I’ve been trying to instill the habit of more and better exercising into my life since January and a recent trip out of town totally broke down my “habit” into almost nothing. I mean, even after getting back home I’ve been really struggling to get even close to what I was doing before I went on this little trip.