Every entrepreneur dreams of affecting the world in some way. There are those who impact it in small ways, and others who make a larger imprint. Alexa von Tobel, founder of LearnVest financial planning services, is changing the world by empowering people to take control of their money to live their richest and most balanced lives. In her interview with former SUCCESS Publisher Darren Hardy, von Tobel shares why her excitement has never waned and what you can do to stay passionate about your cause.