The only people who have control over their careers are the ones you see on the covers of magazines. Everyone else is just plodding along making a living. The key is not to live over your means and overdo it.
“Conventional dogmas, even if endowed with the authority of an Aristotle - ancient or modern - must be tested vigorously. If they are found wanting, we need not bother with them. But if they are found to be substantially correct, we may not overlook them.”