I have a soft spot for anyone in business that truly works to help others. Dave Ramsey, from my review efforts is just that type of person. His website comments that his companies success is based on not dollars coming in, but the number of lives changed. This includes getting out of debt, and investing for the future using his assistance.
Dave Ramsey is a financial counselor, has a radio show, and is an author. Much of his work has a "Biblically Based " theme and a couple of his more popular works are the Total Money Makeover and the Financial Peace University geared towards paying off debt.
Much of Dave's work is in helping others become debt free, using his own personal life experience and knowledge, and using cash rather than "plastic".