As an aspiring Judo athlete, commonly you will do Judo training sessions and gym sessions. Running sessions will likely be included; but what about your mental preparation? Are you treating that with the same seriousness as your Judo, gym and running sessions.
A recent review of research (Rossi, et al.) concluded that mood state (anger, tension, confusion, depression, fatigue, and vigor), anxiety, motivation, and mental toughness are factors that affect the result of Judo contests.
Which means that as an athlete you need to develop your skills in regard to mood, anxiety, motivation and toughness. To do this you will need to learn techniques and practice them just as you would a new throw.