I can't stop messing with my nails. ?

I make myself crazy because I literally cannot stop messing with my nails. I don't bite them but I do something just as bad. I peel the layers off of my nails until they're paper thin. It is a terrible habit but it is a stress reliever. What can I do to stop messing up my nails so badly? I want to make them stronger but I don't know what to use because I always start peeling them. I'm getting married next year and I want nice nails but I am ruining them. HELP!!!