Harvard research confirms gratitude journaling boosts happiness by 25% and improves measurable health outcomes. This scientifically-validated practice actually rewires neural pathways, reduces cortisol by 23%, and improves sleep quality. Just five minutes daily creates an immediate mood boost lasting hours. The key? Consistency over eight weeks creates lasting neural changes, especially when combined with mindfulness practices. Start with 3-5 specific gratitude entries daily to build this transformative habit. [Discover the full neuroscience behind gratitude →]