Launching a business is not the finish line, but rather the start of a marathon, and what's not heard about as often is the challenges that accompany even the most successful endeavors.

Kristin Darga, founder of Impact Founder, shares what it took to build a company, publish her first book and the many things she learned via interviews with other business founders about what actually happens behind the curtain once doors are open for business, and the hidden costs of pursuing one's dream.