That depends what you call a “good” lifestyle. Could I rent yachts and get bottle service every weekend living off my passive income? No way. Could I travel 10–15 weeks a year and live in central Tel Aviv with money to spare? Definitely. I was able to earn low 6 figures completely passively. But if you want to make boatloads of money, and step up to the 7-figure territory, then yes, you’re going to need a combination. If, however, you want time to pursue your passions and have a moderate amount of fun, you can definitely sustain yourself with passive income.

“There is no such thing as 100% passive income,” says Flynn. “Even with real estate you still have to manage your properties, or even with the stock market, which is potentially passive income, you still have to manage your portfolio. With online business, there is no such thing as 100% passive income — and this is coming from a guy with a blog called The definition of passive income is ‘building these businesses of automation,’ but in order to keep them automated and keep that trust going with your audience on top of that, you do have to keep it up every once in a while — so a lot of time upfront and a little time after. But there is alway time involved.”

The organizing principle behind this grouping, appropriate economic units, is relatively simple: if the activities are located in the same geographic area; if the activities have similarities in the types of business; or if the activities are somehow interdependent, for instance, if they have the same customers, employees or use a single set of books for accounting.
From what he describes, creating passive income definitely does not sound easy. It requires a serious ramp-up -- often requires 80- to 100-hour workweeks in the beginning, says Flynn. But once up and running, and depending on the content, some sites take fairly minimal maintenance. Green Exam Academy, the LEED exam study site he launched in 2008, takes just him four to five hours a month to maintain but brings in $250,000 annually.

Occupational therapist Sarah Stromsdorfer founded occupational therapy site three years ago as an online educational resources for occupational therapy students and professionals. She worked on it every weekend, and her site now makes enough income for her to work as an occupational therapist part-time. She believes it will be another year before her site makes enough money for a full-time living of about $4,000 per month. In addition to the digital products she also makes money from ads and online book sales.
What I did: I first identified my favorite places in the world to live: San Francisco, Honolulu, Paris, Amsterdam, New York City, and Lake Tahoe. I then looked up the median rent and housing prices for each city. Then I factored in private education costs for two kids to be conservative given I may not have two kids and public schools are often good enough. After calculating all vital costs, I then did a self-assessment of how happy I was making $50,000, $100,000, $150,000, $200,000, $250,000, $350,000, $500,000, and $750,000. I decided working 20 hours a week making $200,000 a year is the best income balance for maximum happiness. 
When a taxpayer records a loss on a passive activity, only passive activity profits can have their deductions offset instead of the income as a whole. It would be considered prudent for a person to ensure all the passive activities were classified that way so they can make the most of the tax deduction. These deductions are allocated for the next tax year and are applied in a reasonable manner that takes into account the next year's earnings or losses.