If you look at a block and see that it is 'off' by a smidge (like 1/8" or less) will you still tear the entire block apart and start all over again?
I completed a quilt, and it has points that may have been slightly 'cut off' at the tip or some of the seams don't align exactly (off by 1/8'); but I've managed to make it work and square it off in the end without much difficulty. From five feet away, you couldn't tell where the mistakes are, but I know where they are (and there are many, believe me).
So, are you more forgiving of yourself, or does every block HAVE to perfectly perfect before you're happy with your work?
(I'm not talking about quilts to submit 'for show.' I'm talking about quilts you would use for yourself, hang on your wall, or give away as a gift.)