How to deal with anger ?

A question which always comes to my mind is when we say that a man should conquer his 5 senses and should avoid greed , lust , anger , ego , illusion etc then why did God or Universe make these at all. In particular say Anger. If it was so bad why did God create anger at all. 

So I asked many people in my Whatsapp group and I got very interesting answers and some real points to ponder. 

But that does not answer the basic question.

Why God created anger in the first place ? 

Let's introspect.

God created human being with free will. Human being is the only creation which exercises total free will. 

He can do whatever he likes , achieve whatever he wants , enjoy whatever he likes and create whatever he is driven to create. 

That's a good point as well as a bad point.

Good since it gives liberty 

Bad as in it doesn't describe boundaries. 

Anger is a tool which creates boundaries and limits. 

You disturb a sleeping lion he will bear it , you disturb him again he may still bear it, but if you keep on disturbing it there will come a point where he will retaliate. 

Now this retaliation comes from the emotion of anger. If there was no anger it won't retaliate even if you disturb it to ages.

Similarly we keep destroying nature but nature does not react. But if we keep on destroying nature at one point nature will react with anger and retaliate by means of tsunami or earthquake or heavy rains. 

So anger is necessary to create a boundary and discipline.

If that is so why do we say anger is bad ? 

Anger is bad because the way we use anger is wrong. 

Anger is like one of the weapons in a warriors armory. And the rule goes like this 

1) Weapons are used only when necessary. 

2) Weapons are used as per situation demands. We don't use a tank to kill an enemy soldier.

3) Third and most important, weapon is a tool but the warrior doesn't become the weapon. What does that mean? Anger is only a tool and we discard the tool after use. We don't sleep with the tool.

After every tsunami nature comes back to its creative phase and does not carry it over. 

So the best way to handle anger is to handle it like a tool. 

Always reprimand the action and not the person and never carry it to bed.

Don't make love with anger 

And only a heart filled with love won't get angry over small issues