I can't recommend The Millionaire Fastlane by MJ DeMarco enough. Title sounds like a get rich quick scheme, but it's not. It's about running a business that's founded on his 5 business commandments that form the acronym CENTS
C - Control. You need to be in control of your business. Are you fishing in a pond controlled by someone else? And what happens to your business when that pond is taken away?
E - Entry. Identifies poor opportunities and crowded markets that should be avoided. Simply put, the easier the opportunity, the worse it is. If you’re an entrepreneur scoping for ideas, the best are the hard ones because the difficulty represents the opportunity. When difficulty doesn’t exist and the Commandment of Entry looms, another red flag is hoisted: you aren’t solving any problems.
N - Need. The Commandment of Need states that if you own a controlled and entry-barred enterprise that provides relative value, satisfying needs or wants, you will win growth, profits, and possibly, passive income for life.
T - Time. Abolishishes the causal relationship between your time and income. It's about creating a business that isn't directly trading your time for money. You want to be able to generate income while you're sleeping or on vacation. An example is selling a product online.
S - Scale. To generate wealth, you need to impact many people. You may be great at woodworking and many of your friends love the tables you make. But, if it takes you a week to make each one, you're only making 52 a year. Your business needs to be scalable to reach thousands or even millions of customers.
The Millionaire Fastlane isn't about doing what you love or what you're good at. The CENTS commandments is a way to test your business idea against. I'm probably not doing the book justice, but I found it to be very eyeopening.