Rather each time God calls one of his prophets there is always a specific situation that requires a concrete task. For Moses, the task is to lead Israel out of Egypt. Many people think that God only calls those people who become ministers but each and everyone one of us has a calling. There are a few of us that are fortunate enough to hear the calling and act on it. You're going to have to find that out for yourself.
Life is like a box of chocolates.
You never know what you are gonna get. Maybe you are being called to run a drama group for this church. Maybe you are the one to organize a group of players to enhance the worship services. Perhaps you have gifts in fundraising. Maybe you are the one to organize the rest of us to raise money for this church.