Dreaming of transformation is a sign of change. By definition, transformation is the becoming of something else that you weren’t previously. It can be a positive thing, yet it can also be a negative thing. Dreaming of transformation is the same; you may be welcoming the transformation, unable to wait until it happens and yet, at that same time, it is possible that you dread transformations, satisfied with how things were before then.
To see yourself transforming in your dreams suggests that you are not satisfied with yourself. You yearn to be something that you deem perfect and modify all other aspects of yourself.