“One of the secrets of a happy life is continuous small treats.” ~Iris Murdoch After dinner, my husband and I grab a mug of tea or coffee and head for our favorite chairs to watch World News Tonight with David Muir on TV. Sometimes, on summer evenings, we treat ourselves to ice cream. It’s a ritual that our dog, Coco, happily anticipates — because we also reward her with a handful of dog biscuits if she finished her dinner. Watching her savor each cookie never fails to bring me joy. Sometimes we set our goals impossibly high, deluding ourselves into thinking that happiness depends on huge wins and rewards. But…