A few years ago while on staff at a church, we received a family who came to faith at a crusade, and the father was the founder of a major fast food franchise. So in less than a year he was my boss, and the president and ruling Elder of the congregation. Now he was a great guy and very successful in business, but he did not know how to run a church. So he instinctually ran it like a business and his policies failed. He did not know how to lead in a church, which is different than in a corporation, even though a lot of the principles are transferable. After several years he did become a good leader as he matured in the faith. But the church suffered during his learning curve needlessly.
There is no substitute to time spent in the face of our Lord, with a surrendered heart and a learning will. We must be willing to be humble no matter who we are and our experience. I had to learn this lesson a few years back when I went from being on staff at a large and influential church to a small church in a small town. My first thought before accepting the call was that I was too good for it. But God wanted me there to teach me to walk closer to him, and not walk in the position that I held. So I did, and I experienced humbleness. Nobody knew me as the conference speaker or author or big position in a big church, but just a youth pastor in a small church. But this is where Christ wanted me, and I learned a lot. It prepared me for the road He had for me. And I'm glad I went there because I learned things in a broader context, that I could not have in a large "mega" church.
"Do your best to present yourself to God as one approved, a workman who does not need to be ashamed and who correctly handles the word of truth. Avoid godless chatter, because those who indulge in it will become more and more ungodly.
Flee the evil desires of youth, and pursue righteousness, faith, love and peace, along with those who call on the Lord out of a pure heart. Don't have anything to do with foolish and stupid arguments, because you know they produce quarrels. And the Lord's servant must not quarrel; instead, he must be kind to everyone, able to teach, not resentful."(II Timothy 2:15-16; 22-24) This passage is a testimony to the importance of holiness, and to keep ourselves growing in our spiritual lives so that our emotional selves are impacted and grow too. Spiritual maturity will lead into emotional maturity most of the time, unless there is some physiological or psychological problem, or deep stress that has never been resolved. It is imperative for the leader to be in control of their emotional health. If not, they need to step down and seek help both spiritually and psychologically. If the leader is given to fits of rage or is just overly emotional, they cannot set the example that Christ has. We are not to be Vulcan's exhibiting pure logic and no emotions, absolutely not. God created us as emotional beings, but as with anything we must have control of the excess and the potential for rampage.