He rode the waves at 20 or so to win the ALL-England and then accolades, presents/gifts were presented to him. He was famous, people rolled out to call him the hero of Malaysia's badminton. He loved it and he lived it up and lived up and lived it up. Then his belly started to feel full and his lungs began to breathe hard and when he came back playing the motivation and the energy were not there. He put it down to just a temporarily event and that he would come out of it quickly once he is ready to.
He goes to training with half his heart dreaming about the things he would do with his friends at night. He put in his training appearances and seemed to train hard. But when the crunch came on tournament days, he capitulate because the energy was not there. He never understood stamina as it should be and took it like if he plays good he might win the match.
Soon it was harder to get his form back as his strength is not there. Even today he might be fooling himself -- KJ obviously showed him up today after the 1st game, he must have been a spent force in the 2nd to lose by such a big difference (I hope it was something a bit more palatable like a strained thigh or a troubling knee).
There is no way back for this chap unless he trains while others have a break in the Festive season.