fall apartvi phrasalphrasal verb, intransitive: Verb with adverb(s) or preposition(s), having special meaning and not taking direct object--for example, "make up" [=reconcile]: "After they fought, they made up."
figurative (emotionally: lose control) (情绪、精神)
崩溃 bēng kuì
It is important not to fall apart when things don't go exactly your way.