My father-in-law and I were discussing organizational dynamics the other day and one of the ideas he put forth, after decades of observing and working with people, was that self-obsessed people have not yet learned to manage their competitive drive. Rather than channeling their competitive nature and the urge to self-preservation which undergirds it, they are driven by it subconsciously, consumed by its powerful compulsions and urged unwittingly to view their world from the outside in, rather than the inside out.
Rather than focusing on how to assist others to a state of greater capability and fulfillment, they think, talk and even write about themselves obsessively. They may care about others, but their 1) concern for others is eclipsed by and 2) their ability to be of service to others is hampered by their concern for themselves (both how they feel and how they’re being perceived by others).
You must of course work on yourself, push yourself to be better, stronger and more capable of articulating the spirit of life within you, but that is best done quietly and out of view.