Don't point out your mistakes. Only the quilt police will notice them.
Don't feel like you have to keep scraps, unless you like scrappy. I give my scraps away or I sew a yard of fabric into a sack and throw all my scraps into it for a doggy bed.
Don't give up on your UFOs, WIPs, PHDs. I am slowly whittling down my UFOs by picking out one and working on it at least 30 minutes a day for one month. If it isn't finished by the end of the 30 days, it goes back in the UFO box and I pick another one to work on the next month. Sooner or later, you will get them finished.
Don't force yourself to finish a quilt that you have come to hate. Package the pattern and all the fabrics, pieces, etc. and take it to your guild (if you belong to one) and give it away. Someone will love it. If no one wants it, put it all in the doggie bed bag.