Hidetada Yamagishi

Learn as much as possible about training and nutrition. There's a lot you can learn by trial and error, so write down every training and meals to find out what works or doesn't work for you.

As far as competition goes, try to bring your best condition/package every time to stage and focus on your improvements compared to the last competition. I advise not to be overly focused on the placing or winning because that's what the judges are there for. Save the stress and time complaining about it; it's not for you to decide who should be the winner, but it is your job to be your best. Always ask judges for constructive criticism on how you can improve for the next show.