We recently revisited the early 90's series In Living Color, so I'm going to give you a big retro throwback and say, "Go on, girl!" "You are strong. You are beautiful. You are perfect."
Boo to the invalidator! Not a good fit indeed! Pffft. You are astute to realize this person is not pleased with your new stability. This says quite a bit about them. You are right on track with pursuing what you want to do and disregarding this silliness.

So there!