— For me, humans are different. If you want to make the Kyokushin Karate a lifetime, you should pay attention to one thing: there is not just the athletic competition. Many Kyokushin Karate people who once had great success in the competition have stopped: Hajime Kazumi, Kenji Yamaki, Tadashi Nakamura or many of my generation have dedicated themselves to different styles.
You have to face reality and realize that karate is more than just sport and that you can develop your karate skills into old age. So after the "professional career" is not final as a referee ;-)
One can and may also devote to martial arts such as the Chi Gong, Kyusho or Dim Mak and the Ki-energy. Only those who understand this will develop as a person, because that was the point of karate.