HASHEM gave everyone a unique set of talents. Some people are strong, others smart, and others musical. But no matter which talents you have, HASHEM gave them to you to help you accomplish a specific mission in this world.
The trouble is, people often lose sight of this. They credit themselves for their talents and even expect praise and honor because of them. Not only does this make them seem obnoxious, it guarantees that they will fail to use their talents as HASHEM intended.
This Shmuz teaches us to view ourselves and our abilities with honest humility. Only then can we achieve the greatness HASHEM meant for each of us.