The video at this link shows an interview with one of the best and most well-known Jiu Jitsu coaches in the sport, John Danaher, where he discusses why he never competed himself. He gives an opinion on athlete mindset vs coaching mindset. I always find his opinions interesting.
https://www.bjjee.com/articles/john...vrUgrKK2v5lgAZIS3mnukbsxOg2lh9ktoSXELzvA5kILs
https://www.bjjee.com/articles/john...vrUgrKK2v5lgAZIS3mnukbsxOg2lh9ktoSXELzvA5kILs