Ramsey is perhaps best known for advocating a “debt snowball method”: People with multiple loans pay off the smallest balances first, regardless of interest rate. As you knock out each loan, he says, the money you have to put toward larger debt snowballs. Seeing small wins motivates people to keep going, he says.Conventional economic theory would be to pay off the highest-interest loans first, says James Choi, a finance professor at the Yale School of Management, who has studied the advice of popular finance gurus.