Why this term
I consider the term personal unveiling more accurate than personal development. Indeed, I find that the notion of developing oneself to be the best version of oneself can be pernicious: we risk never being good enough to blossom. On the contrary, unveiling implies that the essential is already present within you and that all you have to do is remove the veils in order to free yourself and let the light shine through.
In this tradition (and probably many others with which I’m less familiar), it is considered that at the heart of every human being lies the pure nature of the Buddha, which is masked by the veils of conditioning.