So much of our happiness is entirely in our control, and with these 11 simple ways to immediately shift your mood from a frown to happiness, based on a handful of scientific studies, you can begin to change the quality of your days in an instant.

In this week's Petit Plaisir, two simple ways to enhance your everyday experience. First TSLL Notepads with exclusive full-color Inslee Fariss illustrations are now available at The Simply Luxurious Life: To-Do lists, and To Market, to Market (grocery list). Also, Martha Beck's The Joy Diet book is recommended.