What is Self-Esteem?

I am rereading a book by Barbara J. Winter titled “Making A Living Without A Job.” It is about how to find what you really want to do and then making a living doing it. The following quote from her book is her definition of self-esteem.

“So what is self-esteem anyway? It is not self-confidence, with which it is often confused. The difference between the two, it seems to me, is this: you can’t fake self-esteem, for it is, quite simply, the high regard that you have for yourself. It begins to grow the moment that you give up wanting to be someone else and respect your own talents and temperament.”