I've been sewing for 47 years and haven't sewed through my finger until last week. I was really tired and trying to get some samples done. I didn't go through my nail, just the soft part of my finger. My reaction was to pull my hand back and the needle broke off. I pulled it out, cleaned it up and told my husband I was done sewing for the night. Lesson learned, don't sew when tired. I always tell my students not to cut with their rotary cutters when tired, now I should tell them not to sew either.