You are definitely not alone. I have a hard time going to a class too as the other ladies taking the class just zip along and I am so slow and methodical that I get real behind in the finishing of a block. I really enjoy sewing by myself and taking my time. I have met 6 other ladies that are so encouraging and nice and so knowledgeable. They are so helpful if I need anything like ideas or suggestions. We meet at one of our houses once a week and just have a real fun time. I had joined a quilting guild and it was very clickish and I felt so out of place.
Just hang in there and hopefully you will meet some nice ladies like I did and just enjoy the hobby of sewing. I find it very relaxing to sew.