Christophe André exposes us here clearly and quite affordable various facets of self-esteem.
This brings us to our education through the construction of the self-esteem, its evolution and our prope inner speech (more or less developed according to the history of each)
As so often in the field of personal development, from a better understanding and acceptance of behavior towards ourselves, we can arrive at certain realizations which they even can induce changes in favor of a better life. Often it improves our relationships with others.
It is, I believe, quite close to the "Know thyself and you will know the sky and the Gods" ..., self-knowledge that is related to self-esteem.
Good reading