My capacity as a monk was to passionately believe utter nonsense, and when you're an actor you have to do the same thing. Also, Christianity used to have a lot to do with self-loathing and an acceptance of criticism and things like that which is terribly important for actors.
I have never described the time I was in Doctor Who as anything except a kind of ecstatic success, but all the rest has been rather a muddle and a disappointment. Compared to Doctor Who, it has been an outrageous failure really - it's so boring.