Life lessons! I agree, move on.
When I first began quilting and thought I had to be obsessed with the 1/4 seam, I bought one of those plastic see through jobs that tape down on your machine to enable you to get the seam width just right. Or wait....maybe it was a guide for HSTs. Whichever, I've never used it and never will. I'm a long time experienced sewer/dressmaker and should have known better but when you are new to a particular hobby, you think you have to avail yourself of things that will "help" you master it. Just be grateful if your cost for those unnecessary "helps" was small, as mine have been.
I have a hard time throwing things away (raised by parents who lived through the Depression does that to you) but I've thrown bad projects away, fabric and all, and useless tools, and hope I will again, rather than keeping them around in my way, thinking I may either "fix" or use them someday. Liberation, it's wonderful!