Many pivotal moments in Greg Friedman's life occurred against the backdrop of major economic shifts. He graduated college right before the dot-com bubble burst, and coincidentally walked away from an internet company he started at the tail-end of the boom. Just after he founded Peachtree Group, the private equity firm he leads, the Great Recession began, and he and his partners had to shift their business model.   Friedman knows firsthand the power of pivoting, which he says helped to lead his firm’s success more than 15 years later. Peachtree Group now counts 250 team members across all of its divisions.