Is that startup spirit sagging? You can build it back up

BETWEEN THE INITIAL EXCITEMENT of launching a business and the stability of running an established company is a rocky and moody adolescence. For startups, “no matter how happily employees burned the midnight oil at the outset, there’s an almost universal dip in morale a few years in,” says Mark Roberge, a senior lecturer at Harvard Business School and author of The Sales Acceleration Formula. When employee-engagement firm TinyPulse combed through staffer-happiness surveys, it found that roughly 70 percent of startups