While it is important to find something that you love to do and turn it into a money making business, you do have to be cognizant of the return as you pointed out. There are many opportunities that I found and tried out that at the time seemed great. But when I took a step back, I realized that I was working a lot for very little income whereas other things I love doing brought in much more money.
​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!
You also get to see specific details about each loan, including what the borrower is using it for, the state they live in, how long the pay-off period is, what the monthly payments are, and what rate the borrower will pay. It helps you get a better picture of what type of risk you’re exposing yourself to, and you get to take more control over your investment.
What I Do: I’ve set up multiple investment accounts outside my main operations bank that deals with working capital e.g checking, paying bills. By transferring my money to a couple brokerage accounts and two other banks as soon as it hits my main bank I no longer have temptation to spend on frivolous things. As a result, I can wake up 10 years later and reap the rewards of compounding. My 401(k) is the best example where constant contributions over 18 years has grown to over $500,000 without any savings pain given it just became a part of life. Real estate is also a fantastic asset class for the long term. It’s fantastic to enjoy your home, pay down your mortgage each month, and end up with a paid off asset that has likely appreciated during your time of ownership. 
Your income is your greatest wealth-building tool—a tool that typically requires your active participation in the form of a full-time job. You know what I’m talking about! Even if you love your job, I’m willing to bet you wouldn’t mind earning some extra income without the blood, sweat, tears, and time commitment of another job. In fact, there are several benefits. Building a passive income:
Another benefit of residual income is that, if the income stream is large enough, one does not need the main focus of his life to be on making enough money to survive. Having a comfortable and continuous level of residual income opens up more opportunities to travel, look into other business opportunities, and even take the time to indulge in his hobbies.
Whether you take a “distribution” (aka free-cash-flow) in the form of a dividend, interest payment, capital gain, maturing ladder of a CD, etc, you are still taking the same amount of cash out of your portfolio. Don’t fall for the trap of sub optimizing your overall portfolio’s performance because your chasing some unimportant trait called “income”.
My esteemed marketing colleagues initially balked at the idea of creating products that generate royalties, so I can understand how creating something from nothing might be daunting for those who aren’t even in creative roles. However, realize there is this enormous world out there of photographers, bloggers, artists, and podcasters who are making a passive income thanks to the Internet.
It’s not just the little guys like me who are being squeezed by the constant updates. Even YouTube’s top creators have expressed frustration with changes to the YouTube monetization platform. It’s constantly changing and evolving, so you must be willing to adapt. Plus, it helps having a blog so you’re not relying on a single platform or your income.

A different definition of residual income is that this is income derived from passive investments, rather than from a person's active income-generating activities. Examples are interest income, royalty income, rent, and increases in the value of investments held. Individuals typically work throughout their careers in order to build up a sufficient amount of this income to support them during their retirement.
Maybe such a business is owning a McDonald’s franchise or something. If one has the capital (Feasibility Score 2), then the returns might be good (Return Score 6). But the Risk Score is probably under a 5, b/c how many times have we seen franchise chains come and go? Like, what happened to Quiznos and Jamba Juice? A McDonald’s franchise was $500,000… probably much more now?
Real Estate Crowdsourcing – After selling my SF rental house in mid-2017 for 30X annual gross rent, I  reinvested $550,000 of the proceeds ($810,000 total) in real estate crowdfunding, based in San Francisco. My goal is to take advantage of cheaper heartland real estate with much higher net rental yields (8% – 12% vs. 2% – 3.5% in SF) and diversify away from expensive coastal city real estate which is now under pressure due to new tax policy which limits SALT deduction to $10,000 and new mortgage interest deduction on mortgages of $750,000 from $1,000,000 for 2018 and beyond.

Financial Planner Course The growth of the financial sector in India makes financial planning one of the fastest growing professions. The estimated demand of financial planners is around 50,000 CFP professionals in the banking and financial services industry in India. However, till May 2017, India has had only 1828 CFP professionals. CFP certification is recognised in […]
Residual income is the amount of personal income left after an individual has paid his bills and periodic mortgage payment (expressed on a monthly basis). Residual income is an important consideration for a lender; if a loan applicant shows a large amount of residual income remaining each month, this means the person's current income level is more likely to support the payments associated with an additional loan. Conversely, a minimal amount of residual income is likely to trigger an immediate rejection of a loan application. Residual income tends to increase dramatically later in life, after a person's mortgage has been paid off.

If you’ve ever thought to yourself, “I wish there was a product that did this,” then invent it! Create a product, medical or otherwise, and sell it as a company or get royalties for it. It’s not impossible to figure out, I have many friends who have taken a concept to market. Don’t overlook an invention as a fantastic means of attaining passive income.
Greg Johnson is a personal finance and frugal travel expert who leveraged his online business to quit his 9-5 job, spend more time with his family, and travel the world. With his wife Holly, Greg co-owns two websites – Club Thrifty and Travel Blue Book. The couple has also co-authored a book, Zero Down Your Debt: Reclaim Your Income and Build a Life You'll Love. Find him on Instagram, Facebook, and Twitter @ClubThrifty.