Every business comes out of an idea. Businesses are started by men and women who see that people want to buy a particular product or service. When you have a first vague thought about a business opportunity you need to develop it into a business idea. A good business idea is essential, or even a prerequisite, for a successful business venture.
However, good business ideas do not usually just occur to an entrepreneur. Rather, they are the result of hard work and effort on the part of the entrepreneur in generating, identifying and evaluating opportunities. 

Read more...  https://www.entrepreneurshipsecret.com/how-to-identify-and-evaluate-business-ideas-and-opportunities/