The most common problem that arises in professional sport contains the psychological type of problem in individual or team sport. Often neglected, from the slow beginnings of Chicago to the development of the very branch of psychology – sports psychology. In the western financially strong countries for many years, sports psychology has been applied through the very sports psychology, which are focused solely on the problems that arise in sports. In the Republic of Croatia, not so often mentioned but all the prominent through the work of prof. Renata Barić, a sports psychologist who, through her professional and professional work, shows that there is a place in sport for sports psychology. This can be seen on the successes of the Croatian national football team, the water polo team… As sports psychologists produce results, it is evident in all aspects of the athlete’s profile, through already recognized methods and ways of finding a way to remove psychological interference in professional sport. Confidence is most often emphasized as a factor of success in sports, and on the already mentioned factor it is often based on sports psychology. It can be pointed out that global sports psychology is becoming increasingly popular and increasingly important in the world of sports, where there is a growing need for professional knowledge of sports psychologists. Very often in sports there are certain competitions where the shades differ the winners, for sports psychology the biggest question mark, in the case where it is extremely challenging to reach the desired advantage. Certain sports psychologists solve these problems with ease, whose results are available and visible across all media. The expertise of sports psychology becomes based on the modern sports world.