But he's the specific kind of mess that somehow thinks he is worthless, DESPITE everything anyone else has ever said
like, he can quite literally have a breakdown, thinking he's not good enough as a hero while he's being surrounded by 13 statues of himself and at least 58 people whose lives are changed forever because of him.
Like, yea, sure, many would not want you to be a hero, pal, but it's because you have stuffed them in jail and prevented their Deathinator 3000 from erasing half the universe?
John would be like, "You have given me a chance to make this world a better, safer place, Hal. You are the morning star to my darkness," and that bum would still curl into a ball, thinking John only says that to make him happy and prevent him from going insane and harming everyone.
ALSO, whenever he's out of his mental episodes, he's fucking insufferable, acting like he has never doubted himself, too.
Kyle would brood, and he would PROUDLY say shit like, "Do not doubt yourself, Kyle. I have never doubted you once; you're still the best Lantern I have ever met in my life. If you think otherwise, then you're disrespecting me, my integrity, my ability to judge people and act upon it. So I ask you again, do you trust your doubts or my judgment, Kyle?"
That fucker knows his own reputation and influence, AND he uses it to the max to manipulate gaslight girlboss people like he's not constantly doubting himself and his own judgment, and I think he's such a funny guy.