Gratitude Literally Changes the Brain and Is One of the Most Reliable Happiness Boosters

Multiple controlled studies show that regularly writing down three things you are grateful for — for as little as three weeks — significantly increases life satisfaction, reduces depressive symptoms, and improves sleep quality. Gratitude activates the brain's reward circuits and increases dopamine and serotonin production. A landmark 2005 study by Martin Seligman found that a 'gratitude visit' — writing and personally delivering a thank-you letter — produced the largest increase in happiness of any positive psychology intervention tested.

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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010965/

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Published: April 8, 2026
views: 118

Psychology Science & Health Education

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