Oh, I think all of us have a story or two about beast quilts... In one of my "better" bad stories, I traditionally pieced a queen-sized Storm at Sea and I believe in doing all of one step at a time. So I first pinned, and then sewed my first long skinny triangles (horrible bias edges) to the diamonds all entirely wrong. So I carefully took them apart and did it again. I mean, I did the exact same mistake again! Took it all out and got it right the third time but trust me, you didn't want to hear the things I was muttering by then.
I congratulate you on your perseverance. I think some of my success in quilting has come from learning how to recover from bad situations, it's not that they don't still happen but that I'm better at dealing with them now.
But, sometimes we get all we want from a project before it is complete. It's ok to throw everything in a box and ignore it for awhile, or to just completely get rid of it. I pick up UFOs with various issues at the thrift store and finish them or at least use them for fabric.