The lesson learned from the palace is that one must embrace and accept all parts of themselves, even the darker and more challenging aspects. It is only through acknowledging and understanding our inner monsters that we can learn to control and channel their power effectively. By facing our fears and insecurities head-on, we can find strength and resilience within ourselves, ultimately leading to greater self-discovery and personal growth. The palace symbolizes the inner world that we must explore and navigate in order to find inner peace and harmony, teaching us that true self-acceptance comes from embracing all facets of our being, both light and dark.