When I listen to what I did under the influence - 10 years of work - I don't think it either enhanced or impaired me. It didn't have that much to do with it.
I'm a better actor now than I ever was, I wish I could have hurried that up, but there's no way. Anyway, I always wanted to be around for a long time. Like a European actor, I hope I live a long time and that I'm acting until I finish.