Have you ever noticed that highly effective people almost always say they love what they do? If you ask them about their good career fortune, they’re likely to advise that you have to love what you do in order to perform at a high level of effectiveness. They will talk about the critical importance of having a long-term perspective and real passion in pursuing a career. Numerous studies of highly effective people point to a strong correlation between believing in the mission, enjoying the job, and performing at a high level.