"When he turned his back to leave Samuel, God gave him another heart. And all these signs came to pass that day." - 1 Samuel 10.9 (ESV)
Saul, on a mission to find his missing donkeys, was met by the seer, Samuel, with a message from God. Israel wanted a king and he was the one chosen for the job. Of course, the news was received with disbelief as Saul politely protested that he was the least of his family which was least in the least tribe of Israel. He, like Moses, had many excuses as to why this plan wouldn't work.
Nevertheless, Samuel stuck with God's word and anointed Saul king of Israel. He gave Saul a series of signs that he should expect in order to prove that God had chosen him as the "prince over His heritage". Notice that when he turned to leave then God touched him and changed his heart.
The first step is the most important one. Nothing happened until Saul turned to go and then God touched him. If you continued to read the story you would discover that all of the signs that Samuel spoke of came to pass and Saul did eventually concede the fact that he was king. Unfortunately, Saul's life cannot be used as a good example of a godly man because it ended in tragedy due to his disobedience and unfaithfulness to the Lord. However, his first step can be a source of encouragement.
Has the Lord spoken to you and given specific direction for your life, but nothing has happened yet? It's possible that you have doubts and fears that cause you to make excuses as to why it won't work. Here's the solution: turn and take the first step. It's the first step that signifies faith and obedience. It's the first step, no matter how small, that opens wide the door for God to come in and accomplish His will in you.