A person who is fixated on a past injustice done to him is permanently crippled. He bleeds energy. His main identity becomes that of a victim, a loser, and he does everything to service that identity. It is unimportant whether the injustice is real or imaginary. The result is always that he says his own energy by pouring it into the past instead of into the future.
This is why Trump will not be a good candidate in 2024. He’s fixated on the injustice of his 2020 loss. He has dissipated his persona of “I’m a winner and everybody associated with me gets sprinkled with the golden dust of winning” to nurse a past grievance. And he’s never going to be as good at nursing grievances as his opponents. So he loses even at being a loser.