Here’s the truth: a successful business is something that successfully solves a problem. And that business can make more money in two ways: solving more people’s problems, or solving bigger problems. The cool thing about the EP Model is that sometimes these products don’t even have to be yours. You can generate income by recommending other people’s or companies’ services or products. This is called affiliate marketing. It’s actually how I’ve made most of my money since I started in 2008.

Still, you can expect to make a few hundred dollars to a few thousands dollars per month with one ebook depending on how good it is. The more value that you can add through that ebook, the more likely it’s going to be successful. Focus on value here and not on how to do the least amount of work for the greatest return if you actually want to succeed with this.

Now that we've found how to compute residual income, we must now use this information to formulate a true value estimate for a firm. Like other absolute valuation approaches, the concept of discounting future earnings is put to use in residual income modeling as well. The intrinsic, or fair value, of a company's stock using the residual income approach, can be broken down into its book value and the present values of its expected future residual incomes, as illustrated in the formula below.

Loss of your job as a physician often means an expensive relocation to another city due to non-compete agreements.  It may also mean 6 months without income as you get a medical license, a DEA license, and/or go through the credentialing/privileging process.  You may have to sell your house at a loss or even liquidate investments in a down market to tide you over through a period of lost income.  Because of this, employers have an advantage over you in negotiations.  But if you have multiple streams of income, you don’t have to play by their rules and you retain negotiating advantage.  This is your F-You money because it allows you to say “F-You” to the employer and walk away from the job.  You know there will still be money coming in every month even without your main job.
The abstraction ignores the linear throughput of matter and energy that must power the continuous motion of money, goods and services, and factors of production. Matter and energy enter the economy in the form of low entropy natural capital, such as solar energy, oil wells, fisheries, and mines. These materials and energy are used by households and firms a like to create products and wealth. After the material are used up the energy and matter leaves the economy in the form of high entropy waste that is no longer valuable to the economy. The natural materials that power the motion of the circular flow of the economy come from the environment, and the waste must be absorbed by the larger ecosystem in which the economy exists.[20]
Depending on specialty, most of us can expect to be involved with a malpractice suit at least once in our career.  But what if you had 3 cases in the same year?  It is likely that you wouldn’t be able to continue to get malpractice coverage.  Or, if your malpractice is through a group, the insurance company may insist you be thrown out of the group or else the whole group’s rates will go up.  I know of at least one doc who was recently let go partly at the insistence of the malpractice insurance company.  Think your disability policy will cover this?  Think again.
Blogging is a great way to stream in income. Some consider blogging as a passive income source and they are pretty much dead wrong. It takes a lot of hard work and time to build your blog into a viable business.  It is not a good get rich quick scheme, but with time and patience you can easily earn a full time income and even exceed what you make at your full time job if you are really good.

Instead of developing multiple streams of income, the typical doctor spends 1-2 decades developing a single income source.  It might be the equivalent of the Amazon River, but even so, it can dry up surprisingly rapid.  Think about all the things that could put an end to your professional income.  Keep in mind that some of these can be insured against, but many cannot.  Here’s just a brief list off the top of my head:
If you’re curious about my own streams of income, I encourage you to check out my income report for an in-depth look. For now, though, I will tell you that I’m currently at twelve streams, beginning with my day job as an anesthesiologist, and ranging from crowdfunding to owning an apartment building, and to this very blog. Ultimately, having these multiple streams of income has proven to be invaluable to me–not only because of monetary value but because they allow me to live the life I want, and I feel I have a hedge against whatever the future might throw at me.
Looking for ways to build financial wealth long-term without adding more work to your daily life? Residual income allows you to increase your fortune passively — meaning you’re earning cash while you eat, sleep, and brush your teeth. With the substantial increase of online platforms and opportunities, residual income is easier to achieve than ever before.
​Udemy is an online platform that lets its user take video courses on a wide array of subjects. Instead of being a consumer on Udemy you can instead be a producer, create your own video course, and allow users to purchase it. This is a fantastic option if you are highly knowledgeable in a specific subject matter. This can also be a great way to turn traditional tutoring into a passive income stream!
I cut back on medicolegal work to free up time and reduce stress. I spend most of my time on medical directorship work and clinical practice. Free time is spent on exercising, travel, time with family, and blogging. I spend virtually no time on the other income streams at this point. Getting the plate spinning can be tough but then the momentum keeps them turning.
Managerial accounting defines residual income in a corporate setting as the amount of leftover operating profit after all costs of capital used to generate the revenues have been paid. It is also considered the company's net operating income or the amount of profit that exceed its required rate of return. Residual income is normally used to assess the performance of a capital investment, team, department or business unit.
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