I find it a whole lot less stressful NOT to be a perfectionist. When I first started quilting I thought everything had to be perfect, but as the years went on I discovered those little boo-boos didn't really matter that much. If something is off enough to really bug me, I will take it out and fix it, otherwise I just let it go and move on, and nobody else ever notices. Of course this doesn't apply if you are making quilts for show/judging.