This article provides an overview of David Burns' book 'New Mood Therapy,' whose core idea is that the roots of emotions lie in personal cognition rather than external events. The book details ten common cognitive distortions, such as 'labeling' and 'overgeneralization,' which lead to negative emotions. Additionally, the article introduces specific cognitive therapies for dealing with different negative emotions, including overcoming laziness through 'daily activity schedules' and 'anti-procrastination charts,' managing anger through 'rewriting rules,' and addressing depression through 'moderate sadness' and 'reducing dependence on others' approval.' Overall, the book aims to help readers understand and apply cognitive therapy to transform the negative into positive and enhance mental health.