Burnout is not simply a result of long hours. The cynicism, depression, and lethargy of burnout can occur when a person is not in control of how the job is being carried out. Equally pressing is working toward a goal that doesn't resonate, or when a person lacks support—in the office or at home. If a person doesn’t tailor responsibilities to match a true calling, or at least take a break once in a while, the person could face a mountain of mental and physical health problems.
To counter burnout, having a sense of purpose is highly important. A top motivator is enjoying meaning in the work one does; sometimes meaningfulness can outstrip the wage earned, hours worked, and even the promotions received. Having an impact on others and making the world a better place amplifies the meaning. Other motivators include autonomy as well as a good, hard challenge.