How behavioral economics can provide more realistic psychological foundations to any entrepreneur. This Chapter is intended to provide an introduction to the approach and methods of behavioral economics, and to some of its major findings, application, and promising new directions to any entrepreneur. I shall explain how the process of behavior economic field develops, then I shall show what methods are used to measure behavioral economy to let the entrepreneur to choose to do more reasonable behavior to satisfy their employee's any needs. Next, I shall indicate what the main two categories of behavioral economy are as well as I shall explain what risky and uncertain outcomes of individual behavior economic theories are as well as what behavioral game theory is, such as entrepreneur can attempt to apply to solve any business challenges. Finally, I shall explain behavioral economic principles of policy makers or decision makers as well as I shall also analyze whether behavioral economy and psychology which has close relationship to let entrepreneur to understand.