a longgg time ago something happened to my both of my thumb nails, and i dont even remember what...but on each nail there are "u" shaped indents that will not grow back. the nail just grew over the skin and i can slip a needle or peice of paper in between the nail and nail bed. it usually collects dirt and stuff so i usually clean it out. but i dont know what to do, i want it to grow back so bad because i am very self conscious about it. i have been for atleast 4 years now. so should i cut the nail away so that it may attach when it grows back? or am i doomed for eternity??

please help..