I only now found your post and I kind of agree with you. If I don't really like the result of my knitting, most it's better to start anew. Most of the time you learn a lot if you do "nearly" the same project again. In my knitting group I'm known for simply pulling the needle out of the project and start unravelling ;) Other times, I can live with mistakes, though not if it's going to be a gift.
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RE: High standards, they slow me down