In act 4 and 5, How does Henry Heggins get " some of his own " back in act 4 and 5?

When we hear
the phrase of "getting some of one's own" means the same as to get a taste of your own
poison, or getting a taste of your own medicine. In Higgins's case, it means to finally come to
the realization of how his actions affect Liza and those around her. 

Once
again, we find a man so selfish and into himself that he still denies that he has caused any
damage to Liza by treating her like an object, and not a person. He also uses the...