"I believe that if a show works, it's the actor's doing, and if it fails, it's my fault - and I don't think it's just because I'm Jewish and guilt and all that," says Martin Friedman, ending a sincere thought with a joke.Wearing glasses, a beard and his kind smile, the gentle-voiced Friedman is reflecting on 20 years directing shows for Lakeland Civic Theatre - the professional theater at Lakeland Community College in Kirtland - and, perhaps more notably, 50 shows.