There are circumstances that change starts outside and the inside will follow. I think for example, if you are stress because you have many pimples. You start losing confidence. But when you start cleansing and caring your face, the pimples are subsiding. The confidence comes back eventually.
I don't know if this is the change you are referring to. It's just my understanding.
Well, you got it right. What I am trying to imply here is that change doesn't only rely on the outside.