Here's what I love:

This painting:

Everything about it calms and centers me -- the beautiful little girls so intent on their task, the quality of the light (approaching dusk contrasted with the glow of the lanterns), the overgrown garden . . . . This painting makes me happy.

Image credit:
John Singer Sargent: "Carnation, Lily, Lily, Rose," 1886/Tate Gallery, London