When a plateau is a good thing?

I read an article that suggested that a plateau is not necessarily a bad thing. Rather, it's a sign that things are going well, changes are happening. And while it's easy to become disheartened, not sticking with it only makes things worse. I hope I can think like that when I'm in that situation.  Easier said than done, I'll warrant.

I had sweet potato chips today. I cut up wedges of the sweet potato and baked them. I also baked thick slices of bacon, like smoked gammon, with pineapple. And made the pineapply, smokey, salty juices into a gravy. Mmmmm.  It was bloody gorgeous. Although it was very high in salt, at least the sweet potato was healthy. And that's two days in a row that I've come in slightly under my allowance. Not to mention walking on Saturday, Sunday and today. Add in the amount of water that I've drunk, and very little diet cola, and I reckon I've been quite a good girl.