After his experience with Minos, Nico realized that most spectres held only as much power as you allowed them to have. They pried into your mind, using fear or anger or longing to influence you. Nico had learned to shield himself. Sometimes he could even turn the tables and bend ghosts to his will.
Nico's encounter with Minos taught him a valuable lesson about the nature of spectres. He recognized that their power largely depended on how much one allowed them to dominate their thoughts and emotions. By understanding this dynamic, Nico found ways to protect himself from their influence, thus gaining greater control over his own mind and feelings.
As he grew stronger in his abilities, Nico discovered that he could not only defend against ghosts but also manipulate them. This newfound power shifted the balance, allowing him to bend the will of the spectres to his own purposes rather than succumbing to their haunting presence.