I think you should take your job seriously, but not yourself - that is the best combination.
Judi DenchI once said to someone when I was playing Lady Macbeth and they said: "That's tricky, emotionally, what do you do about murdering your husband's cousin?" And there are, of course, things that aren't in your personal repertoire that you have to somehow understand by reading or watching other things and listening to other people talk about them.
Judi Dench