All over the world, entrepreneurs are adding value to lives and transforming economies. But many who started this journey soon discovered that the path to success is so narrow that about 80% of all start-ups veer off the curve every year. The sad reality is that start-ups fail not because founders do not build exactly what they want; but because they waste too much time and money planning and building something that nobody wants to buy. When it comes to starting a business, everyone seems to follow a traditional pattern: 1Find an idea, 2Write a business plan, 3Pitch to investors, 4Build what you want, and 5Sell to the market. For many years, entrepreneurs and product developers have followed this outdated pattern to build what they thought customers liked, only to realize after trying too hard to sell without success that nobody actually wanted what they built. Now, The Entrepreneur - A Lean Startup book for the Smart Entrepreneur to Build a Sustainable Business has been written to show you the step-by-step approach that you can follow to turn your ideas into reality and build a successful business using Lean Startup principles. The Entrepreneur contains comprehensive tools and ideas that can raise your odds of success to build a profitable sustainable business if you implement them. In this book you will learn: How to turn ideas into reality Why you don't need business plan for starting a business Step-by-step guide to design your business model Customer discovery and customer validation models How to turn your business model assumptions to fact How to create a minimum viable product (MVP) The process of validating your MVP Fundamentals for creating a company How to make the first sale Whether you are thinking of starting a new business, or have started one already; or if you are a product developer, programmer, small business owner or CEO looking for simple step-by-step approach to lay a solid foundation for your business, The Entrepreneur can guide you to eliminate waste and build products and services that customers can buy willingly and pay for.