Nowadays, motivation is one of the areas of greatest interest in high-performance sports practice; in fact, new approaches have emerged and, at the same time, questions have arisen about the reasons that lead the athlete either to increase or decrease her or his performance. The aim of this article is to summarize different factors that influence athletes’ motivation. A literature review was carried out by analyzing the literature available in PubMed, Scielo and Dialnet databases that address this topic. With a Price index of 54%, the articles reviewed show that the athlete’s state of mind is of great importance, considering the influence it has on the development of self-control and decision-making, which are fundamental elements for the achievement of proposed goals and sporting success. This work highlights the influence that different factors can have on motivation / demotivation and the fulfillment of physical-sports objectives, such as socio-affective bonds, group leadership and cohesion, coach participation, competitiveness, ego construct, effect of anxiety, and fear of negative evaluation.