When starting up of a business, what is the role of an entrepreneur and what factors he should consider before choosing business design and product?

Entrepreneurs occupy a central position in a market economy. For it's the entrepreneurs who serve as the spark plug in the economy's engine, activating and stimulating all economic activity. The economic success of nations worldwide is the result of encouraging and rewarding the entrepreneurial instinct.On the other hand,the four important things to consider before starting a business are mind set, finances, skills and time availability.