Only do what God wants you to do

Having preached this morning on radical discipleship it's no surprise that one of the things that came up was this business of only doing what God wants me to do. If the Son can only do what he sees the Father already doing, how much more true should that be for those who seek to follow the Son?

But how do I work out what God wants me to do? Well part of it lies in the simple question: What are doing Lord, and how can I help? 

Today, right now, I'd probably say that the three things I feel most passionately that God wants me to do are: Pray, preach and hang out with lost people. 

I wonder if that's the right answer to the right question.