crumple up
Verb
Meaning
(intransitive) To become crumpled or messily folded up.
(transitive) To crumple or messily fold (something).
(intransitive, figuratively, by extension) To collapse; to give up and fold in a stressful situation.
Source: en.wiktionary.orgSynonyms
Examples
At the outset, my notion of being a writer was that you would have moments of inspiration and moments of frustration, when you'd crumple up your pages and toss them away. On one side, the dustbin would fill up, and on the other side, pages would rise into a novel.