Answer by Jagadguru Shree Kripalu Ji Maharaj : 

Think that it will hurt your divine beloved to see you in this state. Why should you get angry? Admit your mistake when you are wrong. Admit it even when you are not wrong.
 
Don’t speak. When you are angry inside, try to use the knowledge given by your Guru and dissolve the anger. if you speak out in anger, it will hurt others and increase your anger.
 
If someone says something bad about you, think to yourself, ‘I am full of vices. Which fault do I not have? So if this person is pointing out one of my faults, why should I be upset?’ Before God realization, everyone is full of faults. Then why get upset?
 
If someone praises you today, keep in mind that the same person may also criticize you tomorrow. Always be ready for criticism.