Were you thinking it might be BPD?? (If that was what you were pondering, it's worth noting that one can have one or the other or both.) Have you talked with you Pdoc or T about it?

As far as what stable means to me... that I'm pretty consistently hovering around (or best yet, right on!) the neutral line on my mood chart. A random day of depression doesn't bother me in assessing it. I'm not a rapid cycler (well, I might fit the "official" definition of more than 4 in a year some years, but nothing like what others here describe), so it's not too hard to assess. At the end of the day, I just give it a rating.

(Every so often something situational will come along that throws me enough to note, which, if I bother, I'll put it on the chart as an open circle (secondary to the day's rating). Those are more for my reference than anything. Not even sure why I mention that, lol. What? To let you know I'm a hopeless customizer for whom there is never enough information? )

So, primarily I base whether I'm stable on what the mood chart shows. But, the other thing that indicates it to me is that I feel like I'm dealing with everyday life. Am I cooking? Eating? Getting a bit done? Not feeling completely overwhelmed? Able to get out the door without much trouble? Are these things pretty consistent? Then, yup, stable. (Of course, we could go with the bouncing off the wall, talking a mile a minute end of things too, but they're less often for me, so the others are more often what I'm assessing stable from.)