Check out this video of a Japanese documentary called 'Onore ni Kate' - which means 'Overcoming Myself'. It follows the famous Susumu Takanabe Sensei and his preparations for the 2009 World Kendo Championships in Brazil. This video is taken from a recent livestream that I did in The Kendo Show: EARLY ACCESS Group on Facebook, where we watch the video together, and I give a rough translation of the content.
The original documentary video is here:
Video from: 剣心一如
My favourite, is the fantastic scene with Takanabe Sensei having gruelling practice with Kazuo Furukawa Sensei. Furukawa Sensei's advice to Takanabe Sensei is "You have a great Men attack! But you must fight to the very end, with the feeling of 'I will not lose' - even in your normal practice! You must make me want to tell you 'wow, you've become really strong!'.
Hope you enjoy!