1. Trust your instincts and abilities: Percy realized that he possesses unique abilities and strengths, and he learns to trust himself and his instincts despite his initial self-doubt.
2. Friendship and loyalty: Percy forms strong bonds with his friends, particularly Annabeth and Grover. He learns the value of friendship and the importance of relying on others when facing challenges.
3. The power of choice: Percy comes to understand that he has the power to choose his own destiny and make his own decisions, rather than being controlled by fate or prophecy.
4. Accepting his true identity: Percy learns to accept his true nature as a demigod, embracing his heritage and responsibilities. He realizes that he belongs in the world of Greek mythology and has a role to play in protecting the world.
5. The importance of teamwork and cooperation: Percy works together with other demigods and allies to solve the mystery and defeat the challenges he faces. He learns that by combining strengths and working together, they can achieve what they cannot accomplish alone.
6. Overcoming fear and doubt: Percy confronts his fears and doubts, including his fear of water, and learns to channel his emotions and abilities into strength. He grows in confidence and resilience as he overcomes obstacles.