A big ego is not a sign that one likes oneself, but just the opposite. If people “brag” and “show off” a lot, it raises the question, what do they dislike about themselves so much that they feel they have to get others to like them to compensate? …

True self-love disappears the ego, it does not enlarge it. Put another way, the larger your understanding of Who You Really Are, the smaller your ego.
When you know Who You Really Are fully, your ego is fully gone.
(From the book “Friendship with God” by Neale Donald Walsch, page 76)