“I want to start a business but I don’t have any money.” I hear this statement over and over again as I work with aspiring entrepreneurs. Many of them have sound ideas, but feel they need a lengthy business plan and a large amount of cash to get started. The reality is, most successful entrepreneurs end up bootstrapping their business. If you are passionate about what you are doing, there are always ways to get things done with limited resources. Here are five keys successful entrepreneurs use to build thriving companies.