And Jesus went into the temple of God, and cast out all them that sold and bought in the temple, and overthrew the tables of the moneychangers, and the seats of them that sold doves,  And said unto them, It is written, My house shall be called the house of prayer; but ye have made it a den of thieves.
Matthew 21:12,13
If you are a leader, you will become happy with the things that make God happy.  You will also become angry with the things that make God angry.  You see, Jesus got angry when he saw the evil that was being perpetrated by backslidden worshippers.  They had converted the church into a business centre.
Most people are only capable of natural fleshly anger.  But the Bible speaks of anger that is different.  That is what I call holy anger.
In this Scripture, Christians are actually instructed to get angry sometimes.  The important thing is not to sin whilst you are angry.  Holy anger is the anger that rises within you against the devil, sin and wickedness in the world.  Holy anger is the anger that rises against injustice and oppression.
When holy anger comes upon you, you are expected to take certain decisions.  Just as Jesus threw out the moneychangers from the temple, there is a time to throw certain people out of your organizations.  Many businesses and companies fail because they fail to act appropriately in righteous anger.  Leaders must know how to operate in righteous biblical anger.

“Leaders must know how to operate in righteous biblical anger.
The Laws of Anger
1. A leader is supposed to get angry at evil.
And delivered just Lot, vexed with the filthy conversation of the wicked
2 Peter 2:7

2. A leader’s anger must not lead him to sin.
Be ye angry, and sin not…
Ephesians 4:26

3. A leader’s anger must not be combined with unforgiveness.  A leader whose filled with anger and unforgiveness is a dangerous person and all his decisions will be wrong.

And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.
Mark 11:25

4. A leader’s anger must be short-lived.  A Christian’s anger must go away by 5.30in the evening,  A continuously angry man can never be a good leader. All his decisions will be wrong.

… let not the sun go down upon your wrath:
Ephesians 4:26

5.  A leader’s anger must not develop into bitterness.  When a leader’s anger evolves into bitterness, his entire leadership is coloured by this evil spirit.

Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled
Hebrews 12:15

Excerpt From: Dag Heward-Mills. “The Art of Leadership 3rd Edition.” iBooks.