Improving employment opportunities for people and reducing the economic burden on government requires a broad and concentrated effort on private sectors. Private sector growth is a key engine for creation jobs. The major advantage of private sector is its employment potential at low capital cost. These sectors are the nursery of entrepreurship, often driven by individual creativity and innovation. Entrepreneurs seek opportunities and innovations often provide the instrument for them to succeed. However, certain social, cultural and structural factors are inherent within a society which can affect entrepreurial activity. The purpose of present paper is exploring a set of positive and negative factors which can result in either stimulating or damping the activity of entrepreneurs in Iran. The statistical population includes successful entrepreneurs of Iran’s provinces in 2014 that were selected as sample randomly. The result shows that success achieved by the entrepreneurs is positively correlated with their risk taking abilities. The overall conclusion clears that the family and government support influence