The article presents a theoretical model of the entrepreneur's capacities and their influence on business performance. Starting from the traditional theory of dynamic capacities, those related to entrepreneurship and/or that influence the entrepreneur's capacities are identified, determining factors such as training, experience and confidence. In addition, other factors such as the environmental and institutional environment have been taken into account as they affect the entrepreneurship. For this purpose, a study was carried out with the Smart PLS software in a sample of companies in the tourism sector in the Mar Menor Region (Spain). An essential factor in the development of entrepreneurship in the region is the sustainability of the coastal lagoon. Some considerations are obtained from the study of the factors that determine the model of capacities, in which the confidence of the entrepreneur and the environmental sustainability, exert a positive and significant influence in the business performance. Furthermore, among the mentioned capacities of the entrepreneurial influence, experience and trust are the ones that most influence the success of the tourism business.