There is an instinct for survival, whether a piece of consciousness is a plant, an animal or a human. The ego, too has an instinct for survival built into its structure.
Egos are chronic dreamers that elude and delude.
They do not fulfill promises, but they do control through the pleasure and pain principle. While violating an ego standard causes pain, unfortunately many humans at various points in their lives, are enwrapped, self-esteem wise, with ego processes. But worth really has nothing to do with such egotistical things. You are worthy by existing. End of communication on that subject.