Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
I won't deny that Hal was a whiny jerk in the first arcs of Justice League and Green Lantern post New52. In Green Lantern, I chalk that up to him losing his ring. In Justice League, it's that evil influence of Jim Lee popping its head up again.
"In Brightest Day, in Blackest Night, no evil shall escape my sight. Let those who worship evil's might, beware my power: Green Lantern's light!"