Hi!! Well, I'm doing a weigh loss thing through work. It's throughout the entire state of Iowa. We were given t-shirts, and the t-shirt says, "Motivation is what gets you started. Habit is what keeps you going." So, I try to incorporate this with exercising and WW. I try to not get out of the habit of doing it the right way. (Notice I say "TRY," because I'm far, far, far, far from perfect.) I try to motivate myself with rewards that are something other than food. I try to exercise daily, even if it's just a 10-minute walk around the block.
So, I would encourage you to not take an off-day, because for myself, I would be scared that I would drag one day onto two (and so forth). But, we all must have breaks too. Treat yourself, for sure, but just don't over-indulge. Hope this helps.