First of all one should remember that one's career is a part of once personal life.
I would rather not consider my job as a career. A career is the trajectory of one's job profiles. As one moves from one position to another, the stream of positions constitute the career of the person. Now, you can see that positions come in their due time, so it is not very helpful to focus on having a career. What is important is that one should concentrate on the present job, present hour and the present moment. The trick is to do your job as mechanically as you can, and never worry about the next moment, next hour, next day and the next job. By controlling one's excitement and expectations while doing one's job, one can go home fresh and have the energy to engage in quality interaction with the family members.