A high school principal urging graduates to go to college insisted that they should at least start college, and gave them a simple illustration. A very rough road ran from the school to the town. It was a dark night as he spoke to them but the principal explained that one does not need a great searchlight shining all the way to walk the road safely. All one needs is a very small light shining one step ahead. When that step is taken, the light moves up and reveals the next step. He was encouraging them at least to make a beginning. 

So it is with seeking to do God's will. Most of us know what our next step should be. If we take that step, we will be delighted to see the Lord's light moving along ahead of us!