Cost per click was more common in the early days of affiliate marketing but has diminished in use over time due to click fraud issues very similar to the click fraud issues modern search engines are facing today. Contextual advertising programs are not considered in the statistic pertaining to the diminished use of cost per click, as it is uncertain if contextual advertising can be considered affiliate marketing.
No problem and good luck. His book is what started my quest for early retirement – although the investment advice is a bit dated. Another couple who are in the same camp are Billy and Akaisha Kaderli. Again, these are sort of the grandparents of the movement. Although in their 60’s now, they retired at 38 with $500k or so. They also spend a large portion of their time overseas – mostly southeast Asia. Both the Terhorsts and Kaderlis focus on expense management to achieve a full life of travel and fun. The Kaderlis have also written several books avaiable on their website – unfortunately, not for free. They tend to do more interviews so they would be a podcast option too.
In Western civilization, wealth is connected with a quantitative type of thought, invented in the ancient Greek "revolution of rationality", involving for instance the quantitative analysis of nature, the rationalization of warfare, and measurement in economics. The invention of coined money and banking was particularly important. Aristotle describes the basic function of money as a universal instrument of quantitative measurement – “for it measures all things […]” – making things alike and comparable due to a social "agreement" of acceptance. In that way, money also enables a new type of economic society and the definition of wealth in measurable quantities. In the Roman Empire, just as in modern colonialism, the main force behind the conquest of countries was the exploitation and accumulation of wealth in quantitative values like gold and money. Modern philosophers like Nietzsche criticized the fixation on measurable wealth: "Unsere ‘Reichen' – das sind die Ärmsten! Der eigentliche Zweck alles Reichtums ist vergessen!" (“Our 'rich people' – those are the poorest! The real purpose of all wealth has been forgotten!”)
Passive income is attractive because it frees up your time so you can focus on the things you actually enjoy. If a doctor wants to earn the same amount of money and enjoy the same lifestyle year after year, they must continue to work the same number of hours at the same pay rate—or more, to keep up with inflation. Although such a career can provide a very comfortable lifestyle, it requires far too much sacrifice unless you truly enjoy the daily grind of your chosen profession. Additionally, once you decide to retire, or find yourself unable to work any longer, your income will cease to exist unless you have some form of passive income.
The doctor or lawyer, for instance, could use her or his income to invest in a medical start-up or buy shares of medical companies he understands such as Johnson & Johnson. Over time, the nature of compounding, dollar cost averaging, and reinvesting dividends can result in her or his portfolio generating substantial passive income. The downside is that it can take decades to achieve enough to truly improve your standard of living. However, it is still the surest path to wealth based on the historical performance of business ownership and stocks.