When to career and when not to 'career'

Career is designing your work beacon, 'seeing' how it is meant to be, and aiming for it daily. The gains of your 'return on investment' of time, effort and application come in many forms, some perceptible, some not so. For example, a positive outlook, progress, strength of character, fortitude, recognition, love, continued growth and independence.
To career along, out-of-control, does not come into it. In fact, careening would be very unhelpful!
Understanding the reasons why form distinctive parts of the journey.
Assimilate and grow.
Sustain.