Yup, that's self-esteem to him and at least he's able to beat Inoue. He's one of the best boxers that I've ever known too. In this upcoming match, most fans are going to think that it's really his last match.
Whether it approves or disapproves, all of his fans are going to like what he's done for his entire career. And he's going to retire with happiness, maybe even in defeat.
He has to make a decision before this fight, regardless of the outcome, it's good that he will retire so he can enjoy his retirement. We know that when a boxer is not getting any younger, he will be prone to injury, and Inoue is at his prime, a heavy puncher, I hope Donaire will have a good movement so he will not be hurt badly in case he will again lose in this fight.
Yeah, he can also promise to himself that any result would be lightly going to be accepted by him. He just have to enjoy this as it could be his last match.
But I know, there's pride in being a fighter and he won't allow Inoue to win for the second time and at least the tie breaker for their score would be delighting for him already.