In my 20 + years working with professionals in Business Development, universally I've discovered that they have learned to think like entrepreneurs. This is what has allowed them to rise to the top of their profession. Each would tell you that along the way they have learned how to think "differently". It is in those differences that we find the difference makers in business. True entrepreneurs struggle with their business opportunities for a variety of reasons. Among the most obvious are a lack of capital, lack of understanding about marketing, and personnel issues. However, from my own entrepreneurial experience and knowledge of others, there are three major reasons individuals fail in entrepreneurial ventures.