DEAR HARRIETTE: Since I was young, I’ve found that I’ve always had strange anxiety-induced habits – pulling at the edges of my hair, sucking my thumb, picking at scabs, etc. Over time, I’d find a solution, or I’d just sort of grow out of it. At present, I scratch the insides of my palms when I’m nervous, stressed or frustrated. I think I may do it at other times, but I haven’t pinpointed all of th…