The greatest problem facing any organism is successful reaction to its environment. Environment, speaking scientifically, is the sum total of your experiences. In plain United States, this means fitting vocationally, socially and maritally into the place where you are. If you don’t fit you must move or change your environment to fit you. If you can’t change the environment and you won’t move you will become a failure, just as tropical plants fail when transplanted to the Nevada desert.