Laughter
Smile more. No really, this isn't some strange woo woo request. It's the best advice I can give. Whether you feel it inside or not, just smile more. Because eventually your inside starts to match your outside. There's probably some science behind that, but my own personal experience would tell you that it works. Force a smile and good feelings follow. Or find something to smile or laugh at. Have any little kids around? Play a joke, act goofy, play hide and seek, just b