Tim Johnson is a man of many hustles. In fact, when he applied for my Inner Circle Mastermind last year, I had a hard time keeping them all straight. Between his day job as a product engineer, his awesome self-publishing business, his Amazon FBA activities, and an upcoming brick-and-mortar project -- and twin 2 year old boys -- there's no doubt he's keeping busy! On this call, we focus on his book business, which has earned a consistent $1000-1500 a month in author royalties.