How does pi try to lift spirits while lost at sea?

In "Life of Pi," Pi Patel lifts his spirits while lost at sea by focusing on survival and embracing hope. He engages in storytelling, often reflecting on his memories and the beauty of life, which helps him maintain his sanity. Additionally, he forms a bond with Richard Parker, the Bengal tiger, turning his ordeal into a shared experience that provides companionship and purpose. These mental and emotional strategies enable him to endure the challenges he faces.