Every person has a unique contribution to make in this world. Figure out who you are, and where you fit into the grand scheme. Imagine the accountant standing in a roomful of doctors and pontificating on medical science. A key ingredient in wisdom is to know who you are, and where you fit into the greater scheme of things.
Arrogance is a major barrier to growth.
Arrogance makes us satisfied with where we are. Don't be arrogant, don't be satisfied. Realize how little you understand. Appreciate that wisdom is your most valuable possession. Then you'll push for more.