I think we learn from medicine everywhere that it is, at its heart, a human endeavor, requiring good science but also a limitless curiosity and interest in your fellow human being, and that the physician-patient relationship is key; all else follows from it.
In creative writing, I teach that characters arise out of our need for them.
I write funny. If I can make my wife laugh, I know I'm on the right track.
If you want something, and you find an obstacle, you need to get over it. By any means necessary.
My agents and my managers are very good at whittling things down to the things they think I would be good at and that I'd respond well to, and that includes theater, TV and film. Whatever it is, if the material is right for me, then I'll go for it.