This document discusses the power of positive thinking and how it can help improve one's mood and well-being, especially during darker winter months. It notes that while we may not control external factors like the weather and seasons, we can control our thoughts and choose to focus on positives. Shifting to thinking in a more "glass half full" optimistic way and focusing on gratitude can make us feel better emotionally and physically by attracting more positive experiences. Research shows that optimistic thought patterns can produce good health because the mind cannot differentiate between reality and imagination. By changing one's thinking, one can change their life for the better even in darker times.