Invest so much in yourself, make your brain your biggest asset.
The way to drive up your revenue and earning capacity is by having high valued (paying) skills.
Time as a currency
If everyone has the same number of hours in a day, why do some people seem to get so much more done than others? How do they do more, achieve more, earn more, have more? If time is the currency of achievement, then why are some able to cash in their allotment for more...