Like many, I was first really turned on to the idea of passive income by Tim Ferriss. In The Four Hour Work Week, he describes the system he developed with BrainQuicken, where the marketing, shipping, reordering, banking, and even customer service of the company was on complete auto-pilot. I found this idea intoxicating. The idea that Tim could travel the world learning to tango and staying on private islands while money just accumulated in his bank account seemed like some strange fiction — surely, this isn’t how people actually live, is it?

One of the easiest ways to increase your passive income is to shift your savings to a bank that pays a higher yield on your savings — for example, Discover Bank and EverBank pay almost 1% for your money. Although it doesn’t sound like much (especially in this low interest environment), little things do add up and eventually interest rates will rise.
A perfect example of the Active Problem Solving + Automation concept is in my online courses I’ve created over the years, or my free webinars I’ve created more recently Each of my online courses and webinars are targeted to help people with specific problems, whether that’s in the area of affiliate marketing, podcasting, building a brand, and so forth. I am always improving upon the courses, but they are also evergreen for my audience.
I’m somewhat embarassingly reminded of Harry Potter and the concept of “Horcruxes” here, in that the goal is to find a piece of your value, and impart it into an inanimate object or product, Voldemort Style (did I really just make a Harry Potter reference?) Anyways, whatever. If you want passive income, you have to think about the value you rent out or own. Or, you need to buy something valuable that other people would like to use (I love the idea of a 3D Printer). Then put it into something that can be sold or rented more passively. Maybe you have a car that sits in the driveway, or a vacation home that is empty half the time. Maybe you just have some funny jokes you could put into a YouTube video and run ads on. At some point, you have to “transfer” the value into something that can work for you — that something is an asset.
There are a few advantages to taking this approach. First, you get close to 100% of your listed price (minus the transaction fee of your preferred payment gateway). Second, you are not competing with other authors and have the reader’s attention solely on your product. Third, selling your eBook on your own platform is a great opportunity to build a long term relationship with your readers via email. Fourth, you can bundle your eBook with other goodies in order to bump up the value and make it more unique. With so many advantages, it's worth putting up the time and start building your own platform.
This world is a dangerous place to live, not because of the good people that often act in irrational and/or criminally wrongdoing ways within the confines of their individual minds, core or enterprise groups, but because of the good people that don’t do anything about it (like reveal the truth through education like Financial Samauri is doing!). Albert Einstein and Art Kleiner’s “Who Really Matters.”
The “Fulfilled by Amazon” program is another really popular passive income idea that’s being promoted a lot in 2017. Basically, you create a physical product (or buy one in bulk from China) and have it shipped directly to Amazon. Amazon then lists it on their website, sell it and deliver it. They obviously take a decent cut but they’re doing most of the intensive work. 

They've delegated, automated, streamlined, systematized, etc. Not with the intention of sitting on some beach somewhere for the rest of their lives and watching the checks roll in, but with the intention of freeing up their time to create even more value that they're inspired to create, either by leading that business to the next level of greatness and service to greater audiences, or by starting a new business.
And while real estate is an excellent option, it does require a significant initial investment, so whether or not this passive income stream is right for you depends on your current financial situation. You might be better off starting with an investment strategy where you can build funds until you have a big enough sum to get involved in real estate.
Creating passive income is the key to retiring, especially retiring early. If you want to retire early with the stock market you will have to save a huge amount of money, because that money has to last so long and retirement calculators depend on you using your investment to fund your life. With passive income you will have income coming in as long as you own the investment, without every eating away at the principle invested. Creating passive income may take more work than investing in the stock market, but I think it is well worth the extra effort!