In this episode, Dr. Killeen explores a lesson from Strauss Zelnick: fortunes are built through focus and preserved through diversification. Building success requires committing deeply to one thing and doing it exceptionally well, while protecting that success means spreading risk once you have something valuable to preserve. For dental practice owners, that means knowing which stage you are in. If you are still building your practice, focus on your patients, team, and systems rather than chasing every new opportunity. If you have already built something successful, it may be time to think about protecting your wealth and reducing your reliance on a single source of income. The key is knowing when to focus and when to diversify.