Day 27- A problem that you have had

I have had various problems over the years, but I think the one that frustrates me the most is the fact that I can't stop biting my nails. This may seem petty and insignificant, but the fact that no matter how hard I try, I can't have the self-control to not bite my nails. And for those of you who know me and know how much I like to control things know how hard this is. So, any suggestions? I've tried everything except hypnosis.