I’ve read stories about people setting up ad campaigns and making thousands of dollars within a matter of hours. What’s the catch?  The big one is risk.  You’re spending money to make money, so if you turn out to set up a bad ad campaign that doesn’t convert well, you can easily lose lots of money.  That’s been the primary reason I’ve stayed away from this method of making money online.  I’m not going to bother giving advice here, because as I said, this isn’t something I’ve done.  If you’re interested, you can probably find a lot of good information via Google, but watch out – as with any other internet marketing topic, most everyone is going to try to sell you something.
When I purchase an existing online business, I look for cash flow over the past year and where the money comes from. I want the sources to be more passive so that it does not take a lot of my time. Also, typically I will make an offer that is 18 – 24 months of profit so that I know that I will get my money back within the next two years. I hope that helps!
Audiobooks are witnessing a surge in popularity when compared to their text-based counterparts. If you have decided to write and publish an eBook, converting it into an audiobook requires little effort and is a great way to bolster your income. Amazon's Audible ACX platform connects authors with producers who can turn their written work into professional grade audio. Once that's done, the audiobooks are put up for sale on Audible and iTunes.
What I’m doing: I use this site to write out goals like 1) Generating $200,000 a year working 4 hours a day or less, 2) Trying to make winning investments, and 3) Keeping track of my passive income streams with free financial tools. My site and the community helps keep me accountable for progress. It’s important I do what I say, otherwise, what the hell is the point? You should consider starting a site or at least a private journal. Write out your specific goals, tell several close friends and stick to the plan.
* Freelance writing: Quality freelance writing takes tremendous effort. Ironically, the better the quality of your writing, the more you don’t want to freelance and just keep the articles for your own site. Freelancing is a great way to earn side income, however, it’s not really for me. I’ll probably take on one or two freelance jobs maximum per year and write no more than four articles a month elsewhere.
You've probably read blog posts and articles that recommend a certain brand of backpack or water, so you click on their hyperlinked link. Oftentimes, that person gets paid a commission when you do. If you have a blog, the same can happen for you. It's a win-win-win for everyone involved — you, the product you're recommending, and the person who clicks on the link to get the product. Pat Flynn talks about this at length on his website, Smart Passive Income, where you can learn a whole lot more on the topic, aside from affiliate marketing.

I really enjoyed how you listed all of the reasons to build passive income streams as well as the framework. You also made an interesting point about freelance writing on how the more skilled writers want to keep posts for their own website. Good insight because freelance writing is something I’ve been looking into for income recently. Also, it’s amazing what you’ve been able to accomplish with your blog over the past 6 years. It’s so motivational to see the success of Financial Samurai. I’m not in a place to afford any consulting, but, I wish I could pick your brain or get mentored by a successful blogger such as yourself…Not trying to blow smoke lol. It would just be so great to have someone who’s done it provide guidance around the direction of the blog, ways to earn, and on the general concept. Always enjoy your posts. Thanks for sharing :)
The bottom line is, it’s smart to have multiple income streams no matter who you are. Why? Because the more ways you can earn money without compromising your integrity, the better off you’ll be. And if you’re self-employed, having multiple income streams is almost essential. Not only will you enjoy a higher income, but you won’t go broke if one stream ends out of the blue.
No one wants to plan for a loss but it is always better to be prepared. US have recently seen a real estate meltdown that has caused the entire economies of the world to go into recession. So, it is very important to foresee such meltdowns and be prepared for losses. A second income source will ensure that you have enough rotational money to see you through losses.
New World Wealth publishes reports tracking the total wealth of countries, which is measured as the private wealth held by all residents of a country. According to New World Wealth, India's total wealth increased from $3,165 billion in 2007 to $8,230 billion in 2017, a growth rate of 160%. India's total wealth rose by 25% from $6.2 trillion in 2016 to $8.23 trillion in 2017, making it the sixth wealthiest nation in the world. There are 20,730 multimillionaires (7th largest in the world) and 119 billionaires in India (3rd largest in the world). With 330,400 high net-worth individuals (HNWI), India is home to the 9th highest number of HNWIs in the world.[335] Mumbai is the wealthiest Indian city and the 12th wealthiest in the world, with a total net worth of $950 billion in 2017. Twenty-eight billionaires reside in the city.[336] As of December 2016, the next wealthiest cities in India were Delhi ($450 billion), Bangalore ($320 billion), Hyderabad ($310 billion), Kolkata ($290 billion), Chennai ($150 billion) and Gurgaon ($110 billion).[337][338]

Overall income potential: Excellent – Although it’s very possible to make $0 with a niche site if it doesn’t receive traffic, you can also make a lot of money if you rank well for good keywords.  It’s not likely that you’ll make a living off one site, but they are generally easy to build.  If you can build one successfully, you can probably build several more.
Thirst for income is likely to continue with interest rates expected to stay low, keeping government bond yields low for longer and their valuations unattractive.  Looking past bonds, the prices of high-dividend shares are historically high, which limits the likelihood that their dividends will rise markedly from here.  Striving too high for an income target tends to push your portfolio further out on the risk spectrum.