Somewhere between planning worship, preparing sermons, and visiting the sick you are still called to help feed the poor and encourage the newly wed's down the street. How can one person do so many things? Well remember Paul said, "I was all things to all people that some might be saved." This is our motto, and our creed. We praise this creed, and promote it to others would follow in our footsteps.
For Superman it was the the sun which gave him his extraordinary strength, with which to do his mighty deeds. The reality is that for us we need to spend our time with the Son, as well. We do not minister under our power, but in the power of time spent with Scripture regularly in our lives. Be sure your soaking in the the Son continually to be a vibrant minister long term