I believe in discipline, so I'm not the right person to cry about weakness and things like this, but maybe I'm not human.
No, I don't believe in hard work. If something is hard, leave it. Let it come to you. Let it happen.
You can still have chemistry on screen without getting on with the person. But it just makes your job a lot easier if you don't have to gird your loins, if that's not quite the right phrase, every time you're going to do a scene with that person.