In the book The 6th Target by James Patterson, a character shares a insight about human emotions and brain chemistry. They explain how our perception of feelings is often skewed by our current state of mind. When we are happy, it’s difficult to imagine experiencing sadness, and when we are suffering, we can't envision a future of happiness.

This idea highlights the temporary nature of emotional states and the way our brains can distort our understanding of the future. It emphasizes the importance of perspective and suggests that both happiness and despair are fleeting, encouraging hope during difficult times.