This exercise can be quite powerful. It not only boosts happiness scores but also successfully treats depression. The elevation takes longer to observe (about a month), but it also lasts longer. Though the experimental exercise lasted only a week, improvements were still measurable six months later. If these gratitude behaviors become habit, so do their long-term benefits. Here’s how Dirk Kummerle of the Massachusetts School for Professional Psychology couches the findings: “[The] gratitude visit and three good things were not only able to reduce depressive symptoms (compared to subjects with
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