"Throughout my life," writes Jeff Darren Muse, "manhood has been a kind of topographic map. Yet it's peer pressure or social norms telling me which route to follow: Smile, Jeff, have a beer. Make babies. Make lots of money. Buy yourself a leaf blower. Hang out at parties. Lighten up." So begins this unflinching look at a fifty-one-year-old environmental educator torn by restlessness and regret. Part Generation X travelogue, part...