Feeling good is a skill anyone can master. It’s no different than learning to play a musical instrument, says a leading neuroscientist. The more you practice, the better you will get at it. Research shows that well-being has four constituents that have each received serious scientific attention. Outlook is one. No surprise for (aspiring) optimists there. Generosity and resilience play key roles too. Attention is the fourth: A wandering mind will lead you nowhere.