"The Paid Hobby – Why paying for passion destroys it" explores the "Overjustification Effect." Conventional wisdom says if you love what you do, you should get paid for it. Psychology suggests the opposite: Money can kill love. The book details the classic 1973 study by Lepper and Greene, where children who loved drawing were given "Good Player Awards." Once the reward was introduced, they stopped drawing for fun. Psychologist Emily Pay explains the mechanism: When we are compensated for an intrinsic passion, our brain reclassifies the activity as "work." We lose the joy of the process and focus only on the reward. "The Paid Hobby" is a warning to artists, entrepreneurs, and parents. It offers strategies to protect your "inner flame" in a transactional world, suggesting that sometimes the best way to keep loving a hobby is to ensure it never becomes your job.