1. I've just started Money by Tony Robbins - very interesting and illuminating..., interviews with 50 extremely successful financial 'brains' and lots of wisdom along the way. I wish I bought this in 2014 when it came out...
2. The Millionaire Fastlane by MJ DeMarco - already mentioned by Michael Baptiste - pragmatic & practical... there were not many really new things in it for me, but it's good to have the business strategies so well organized and explicated...
3. Ask. By Ryan Levesque. A step-by-step way to discover what people want to buy. All kinds of good ideas...
4. How to argue and win every time, by Gerry Spence. This one goes way back, but remains relevant. One quote: "Power comes from the heart zone."