Soil literally makes you happier. Psychology researchers at the University of Colorado Boulder found that Mycobacterium vaccae, a bacterium in ordinary garden dirt, activates the same serotonin-producing brain cells targeted by antidepressants. Gardening works the soil. Planting works the soil. Even landscaping a single flower bed stirs it up. Planting flowers, growing vegetables, growing anything at all — it’s all contact with the same dirt doing the same quiet work. Bees know it too, working that same soil’s blooms all season without asking for credit. Compassion works the same way. It’s not decoration on top of a happy life. It’s the actual soil everything else grows out of. These garden hobbies prove it, plain and simple: dig in, and happiness follows.