The mental stimulation you crave is just beyond your front door, so embrace your inner flaneur. Create a scavenger hunt in your neighborhood and invite your friends to test-drive it. Take your crossword and latte ritual to a different cafe. Scour the corkboard for the dance classes and events outside your usual circuits. Consider what parts of your schedule can be adjusted — or turfed altogether. When you rove your own backyard with as much curiosity as possible, you’ll notice all the gems that you usually miss.