To admit his existential failure. In plain language, his flop is his unwillingness to realize that every undertaking based on “me and mine” is eventually his downfall – inasmuch as I-ness is a synonym for more sorrow and more misery.
“I´d rather choose to suffer, fooling myself that I am entitled to be an autonomous victim, having thus a reason to blame another, than realizing that there is no one to punish and that I can be choicelessly free, content and naturally integrated…”