Hal had ruined the company's order, leaving a large number of employees unemployed. What left everyone dumbfounded was that, as the chief culprit, he had not been fired.
Not because his flying skills were exceptional, but because his flying skills were exceptional. While everyone else lost their jobs, he kept his by living off a woman.
He had lost his father young, grown up alone, accomplished nothing, and been despised by everyone. Only his childhood sweetheart had stayed by his side...
After so many crushing setbacks without any great rise, Hal finally received his golden finger and became the man chosen by the Green Lantern Ring.
Ring: Though this guy was trash, he had the destiny of a protagonist. If not him, then who?
It was the standard washed-up loser protagonist plus ring setup. The plot that followed was more or less the same: Hal obtained the Green Lantern Ring, his life took a turn from then on, and he began undergoing earth-shaking changes, becoming a superhero.
First, he underwent crash training on Oa, the home planet of the Green Lantern Corps. He learned some tricks for using his golden finger and stepped over the threshold into superherohood.
The specifics of the crash training were broadly similar to how Russell had trained Catwoman Selina. It was unrealistic to turn a rookie into an expert in a short time, but giving him the ability to protect himself was much easier. One word—beat him!
More specifically, beat him half to death!
Not only did they brutalize his body, they also crushed his dignity.
They beat him while insulting him, degrading him until he was worthless. Once he became an amoeba that could take a beating, the training was over.
Then the instructor would kindly tell him that although he was weak, stupid,