A common mistake among Christians who get hurt in church is: "I want to be a leader. Therefor, God must have called me to be a leader."
When God called Moses to lead, Moses argued "Who am I that I should go to Pharaoh, and that I should bring the children of Israel out of Egypt?" Moses not only didn't want the job; he clearly understood that he wasn't able to handle it. If you feel that you should be the person in charge of something, you're not acting like Moses "...who indeed was faithful in all His house..."
When God called Gideon to lead, Gideon couldn't believe it. Judges 6:36-40 tells how Gideon tested God twice before Gideon would believe that God had called him to deliver Israel. People who announce that God has called them to be leaders, and who then fight for the leadership, are not acting like Gideon. Something odd about Gideon, by the way; Judges 8:28 tells us that the country was quiet for forty years in his days, a feat that very few churches have ever accomplished. Gideon didn't cause discord and strife among God's people.
The point here, is this: the fact that you want to be a leader is not proof that God has called you to be a leader.