Mel Robbins explores gratitude as a practical, science-backed tool for rewiring the brain away from negativity and reducing stress, rather than as a superficial positivity practice. Drawing on research studies and expert insights, she introduces three main gratitude tools: an unsent gratitude letter, a three-minute nightly gratitude journal (and morning variations), and a gratitude-focused text chain. Throughout the episode, she emphasizes how small, consistent gratitude practices can improve mental and physical health, deepen relationships, and help listeners reclaim control over their attention and emotional state.