Invest in yourself. Your career is the engine of your wealth.
The real force here lies in the *order*—that your career must come before the wealth it generates. Most people reverse this, frantically chasing money while neglecting the very skills and knowledge that would earn it sustainably. Consider the person who takes an unpaid internship or spends evenings learning coding: they're doing what their bank account warns against, yet they're following Clitheroe's logic perfectly. The engine metaphor matters too, since engines require maintenance and upgrades to keep running, not just occasional fuel.