Creativity is great, but plagiarism is faster

I'm having issues with writing. In our workshops, every detail, sentence, word choice, plot twist, monologue, dialogue, point of view blah blah blah is analyzed and critiqued vigorously by 16 ready readers whose stories I just finished picking apart and want revenge. Naturally, I save them the hassle by doing it all myself and avoiding any sort of criticism; it's not perfection, but it's good enough to keep the vultures at bay.

Of course, this takes me hours because I need to look at every detail from every perspective I can think of and one page turns into a night's worth of stress. I could let them tear me to shreds and then take their suggestions, but that takes all the fun out of it. But at a certain point I need to find some compromise because I have other work to do. Usually, it ends up being poetry, which, by the way, is confusing my already dizzy brain. Poetry and prose have similarities--like they are both composed of words--but they're so radically different that I have to adjust the approach I take, so I'll sit through poetry class one afternoon and try to write fiction that night and it all just goes to hell.