If life came with instruction manuals, this might be one of them.
Regardless of your age or your disposition, or if you've been born with the "cheerful gene", this book explains how to become happier by interacting more positively with the life we already have. From resting to having fun, eating properly to getting a good night's sleep, there's a lot we can do to improve our happiness.
Who couldn't benefit from this book? A thoughtful gift, for someone else or yourself.