Kaka insists he is ready to battle his way back into the first-team picture at Real Madrid.
The 30-year-old has struggled in recent years to recapture the form which saw him named European Footballer of the Year in 2007.
He saw a possible move to former club AC Milan fail to materialise this summer and, despite being left out of recent squads by Jose Mourinho, he insists he is ready to fight for his place.
"It's as if I was starting again at 30, after having won everything I've won," the Brazilian told TV Globo.
"I even ask myself, how much is all this effort worth it? Wouldn't it be better to go somewhere else or even another, less competitive league? Well, the answer has been 'yes, I still want this (Real Madrid)'.
"I arrive before the other players, do separate training, practice with the squad. The only way I'm going to get another chance is training more than the others and that's what I've been doing.
"Little by little the fans lost their hopes but I haven't lost hope yet and I believe I can still do a lot of good things at this club."
Kaka has also revealed that Mourinho has told him he will be allowed to compete for a starting spot.
"We have a professional relationship, of mutual respect. I think that in a squad it's normal for a coach to trust one player more than another," he said.
"(Mourinho) made it clear that if I stayed at the club he would respect me and I'd have the same opportunities as everyone."