One quote about overthinking from novels could be from 'The Catcher in the Rye'. Holden Caulfield often overthinks about the phoniness of the adult world. 'I'm always saying 'Glad to've met you' to somebody I'm not at all glad I met. If you want to stay alive, you have to say that stuff, though.' This shows his overthinking of social norms and how insincere they seem to him.
Rebirth from a dead end was synonymous with rebirth from despair, rebirth from despair, rebirth from death, rebirth from nirvana, rebirth from cocoon, and rebirth from nirvana.
Splendid was similar to resplendent, gorgeous, magnificent, wonderful, brilliant, glorious, gorgeous, bright, beautiful, rich, gorgeous, gorgeous, brilliant, and so on.
The synonymous words of great momentum were: great fanfare, magnificent mountains and rivers, all-powerful wind and clouds, swallowing mountains and rivers, vast seas, ten thousand horses galloping, magnificent, heroes achieving success, and majestic.