To understand and cultivate longevity in a profession, one must first distinguish between a job and a career. A job is normally a short time, moment by moment role to put money in your pocket and fulfil certain quotas which allow you to fulfil other important opportunities.
Conversely, a career requires you to build up a certain set of skills and knowledge, leading to higher paying engagements and high level opportunities. Typically, one stays within the same career over longer periods of time. In the course of a healthy career, there are some key questions one should ask themselves in order to make beneficial moves: