Equally important, ask yourself what assumptions have to prove true for you to be happy in the choice you are contemplating. Are you basing your position on extrinsic or intrinsic motivators? Why do you think this is going to be something you enjoy doing? What evidence do you have? Every time you consider a career move, keep thinking about the most important assumptions that have to prove true, and how you can swiftly and inexpensively test if they are valid.