More than 20 years, I played tennis on a competitive level. When I came to the point that I had to decide between professional career as a tennis player or education. I have chosen my education. However, I joined education and playing tennis at the universities in the USA and Scotland on a full tennis scholarship. From the beginning I was very interested in psychology of personality and mostly athletes. Therefore, I chose to develop my knowledge in this area. After the graduation I have returned to Slovakia. At the moment I am working with many individual athletes and teams from different age group and performance level. I help athletes to get better in mental stability and reach their full potential. During my tennis career, I have realized that mental practice is very important for every competitive level in sport. Mental practice is as important as technical, tactical or conditioning practice, therefore the mental practice should be part of every practice process.