In February 2007, Pat Flynn was working at an architecture firm making $38,000 a year. He mulled boosting his earning power by getting an architecture license, but the process would likely take six to eight years. When he heard about getting a credential in sustainable design and environmentally friendly building called Leadership in Energy and Environmental Design (LEED), he decided to go for that, as no one in his department had it. The one problem? The exam was so challenging, just one-third of test-takers passed.
Now, all that said, if capital (savings) grows faster than the growth of the economy, those with savings will see their wealth grow at a faster rate than those who rely on the growth of their income. While this is not an extension of Piketty's argument (you can't take an idea that applies to a population and a whole economy and boil it down to the individual like this), it's not an unreasonable conclusion to take and apply to your own life. (Piketty does talk about this on an individual level, but says it's more impactful for billionaires vs. millionaires – though we have limited data into individuals)
Network Marketing – Network marketing, or multi-level marketing, seems to be on the rise. Companies such as Young Living Oils, Avon, Pampered Chef, and AdvoCare are all multi-level marketing companies. You can earn passive income through network marketing by building a team underneath you (often referred to as a down line.) Once you have a large team you can earn commissions off of their sales without having to do much.