So you’ve come into an extra $25,000, whether via an inheritance, a return of a previous investment, or years of disciplined saving. Now you want to invest it, hoping that this seed of cash can achieve maximum growth. Just like any smart gardener who knows that meaningful growth requires both patience and strategy, you need a plan. To develop that plan, you need input from an expert. GOBankingRates found one with an impressive background. Robert R. Johnson is a professor of finance at Heider College of B ...