He felt angry because they lied and tried to dump it on his. He was sick of rules be this way act that way things others never did. He did it or didn't do always getting crap.
The internal conflict was taking it's toll walking the line. Feeling off balance about to topple over everyone talks about each other but never tries to better themselves. Always on the outside looking in once on the inside he wanted out.
He didn't like to disappoint others but they expected too much. Anything he did was never good enough. He did what he loved so many are miserable trying to knock him because they think they'll matter. Making a difference for all the wrong reasons later justifying them as right.