I was a perfectionist too but finally I understood "better done than perfect". I do charity quilts with fabrics from my guild and practice machine quilting on them. Little by little I try new designs. I learned that I dont like heavy quilting so I am finding what I am feel comfortable with. The set up when you are quilting is a must. If the quilt is hanging you will only get frustrated. Chech Leah Day as it was suggested. Just last weekend I tried another machine and foot and made the whole difference about my experience machine quilting. I think now I will be able to experience more and feel better about it, but to tell you the truth, I usually don't use the seam ripper. I know that the recipient (non quilter) will not even notice the imperfections. Good luck and dont be too hard on youself. Enjoy the process and the result.
Andrea