I need help finding stronger support for my thesis/confirming that my current support is adequate for The Catcher In The Rye by J.D. Salinger.

My thesis is that despite Holden's past in retrospect, he is still a failure and will never cease to be a failure.

My examples are as following
The merry-go-round depicts how Holden's life is on repeat and the future is no different than the past and he will continue to meet the same failures, as he has failed now four times in school and will continue to do so.

Phoebe Caufield never receives the brass ring from Holden, ergo he will never complete any task or achieve anything.

Those are the two supports I have I'm looking to one more and something I have in mind is how Holden can't hold a conversation with several characters he meets throughout the book and his attitudes towards them.

Thanks again for any responses I get /lit/ :]