In terms of the character itself, I can't really say that I find anything really difficult. I enjoy the character so much I don't perceive difficulty in trying to be him. It's just a matter of how do we get there.
Like everyone else, I want to go on dancing forever, but I know the day is going to come when I will have to be doing something else.
Naturally enough, I couldn't have foreseen the vast sea change which has come upon that scene as a result of German reunification and associated events.