With drama, you need to be laughing, in between takes, 'cause you're going to those recesses of your soul and those dangerous parts. Normally, if you're not an actor or some crazy artist, you don't...
All the things you can do to prepare for a role that free you, in the moment, are great. You have this muscle memory for things. You don't have to act it as much, once you've done it enough.
I think as working actors, it's like sales. You're only as good as your last sale, so you put your all into something and you just hope that from that you can get your next job.