Please don't quit! Anyone who has accomplished so much can be a successful quilter.
I am a self taught sewer. I also was biologically left handed, but was forced to become right handed because that was the trend at the time. As a result, I think left handed when I am cutting, but cut right handed. I can't "see" what is so obvious to others, especially when doing any kind of sewing, cutting, or other crafts.
I have taken a couple quilt classes, but was always embarrassed because I was the slowest, and couldn't socialize much because I had to concentrate too hard.
So now I sew in the privacy of my own home. I can go at my own pace, rip out as many times as I need to, and really try to be less of a perfectionist.
Half of the fun of quilting is the dreaming, chosing the fabrics, and the planning. If you love it, Keep going!!!!!!
When my kids were struggling to learn something, I would tell them, "It takes some people longer to climb the mountain, but the view from the top is the same". If you love doing it, have fun doing the process. Also, stretching your brain is healthy.
Keep going Sharon!!!!!!