Confidence is not a problem for U.S. women's soccer star Abby Wambach; the gender wage gap is. Recently retired, the gold medalist and top international scorer is shifting her focus from heading goals to tackling gender equality, and she's not going to let anything get in her way. In this third ChangeMAKERS installment, Cristen and Caroline talk with Wambach about learning from others, leading a team and the forces that motivate her to change the world.