man management

I've been thinking a lot about management in the last few days.
In work I have a relatively new team working for me. I've been thinking about the process of my work load, what am I there for? IE what is my day job?

I've started to come to the conclusion that about 70% of my role is to "Serve" my team. IE to be there for them. This is obviously a reverse in order of priority. I try to ensure the crap is taken away from them so that they can get on with their day job. That means the other 30% of my role is spent upwardly managing and doing my day job? Or is my day job managing/serving those who work for me, or is that I work for them.......

obviously a Friday thought.