A couple of ideas: - Expose yourself to people whom you consider smarter, more talented, or more accomplished than yourself. Ideally in person; you might also

A couple of ideas: - Expose yourself to people whom you consider smarter, more talented, or more accomplished than yourself. Ideally in person; you might also read biographies of people who accomplished amazing things. - Take up a new hobby as a beginner. At various times as an adult I've tried out karate, piano, improv comedy; all of these have been a good antidote to my own natural arrogance.