How can exploring new ideas and interests help someone feel valuable and fulfilled later in life?

Why is the excitement of the late-night search often more addictive than the person who is actually found?
What are some emotional aspects of leaving a dream job at Apple, especially concerning team and project attachments?
What's the most you've ever spent on holiday decorations?
Why might a first responder regret their actions in a rescue operation, even if they followed all protocols and did everything right?