He's not willing to say to the extent he'd fucked up with... basically everyone. Though generally it was a teetering Jenga tower of situations he brought on himself, but then never made worse. That he had improved, that he was capable of being better and had been better the moment that he had the opportunity to do so is something that he can't see right now because this place is making it so damn hard for him.

But that she's trying so hard right now is breaking his heart right now. "S'possible." Is his concession. After all, Soldat knows pretty much what a shit type of person he's been in the past and he's still decided for some reason that he wants to remain Yondu's friend. And here Kitty is, doing her best to try and make a grizzled old Ravager feel better despite his protests.

He holds out an arm like he might want a side hug.