Thoughts are always a big problem

The worst problems for an athlete are coming from his/her thoughts. Images and words often invade the mind at inopportune moments.  Thoughts can only have the duration of one moment but in many sports like shoothing, track&field, gymnastics , diving, swimming  can destroy the performance. When an athlete is in the optimal zone, the mind is empty and he is devoted to do those actions for which he has been trained so much, without even thinking of the result. To achieve this goal she must have trained mentally for a long time .