In the history of the treatment of depression there was the dunking stool purging of the bowels of black bile hoses attempts to shock the patient. All of these represent hatred or aggression towards what depression represents in the patient.
Although in skating you compete with other people anyone who achieves a certain level of success is first and foremost competing against themselves. And for me the idea that I could always do better learn more learn faster is something that came from skating. But I carried that with me for the rest of my life.