Anger is one of the basic human emotions. We are born with the ability to become angry and express our feeling of dissatisfaction towards someone or something. As babies we cry and yell when we're upset about something and that's the only way of communication we know by nature. As grown-ups we try not to use that method of communication often, but that's not always the case. Showing that we are angry is sometimes the only way of getting the message across to others. Suppressed anger is the root and the cause of many behavioral disorders and illnesses, so don't feel guilty if you have an angry outburst from time to time.
On the following day, when they came from Bethany, he was hungry. And seeing in the distance a fig tree in leaf, he went to see if he could find anything on it. When he came to it, he found nothing but leaves, for it was not the season for figs. And he said to it, "May no one ever eat fruit from you again." And his disciples heard it. And they came to Jerusalem. And he entered the temple and began to drive out those who sold and those who bought in the temple, and he overturned the tables of the money-changers and the seats of those who sold pigeons; and he would not allow any one to carry anything through the temple. And he taught, and said to them, "Is it not written, 'My house shall be called a house of prayer for all the nations'? But you have made it a den of robbers." And the chief priests and the scribes heard it and sought a way to destroy him; for they feared him, because all the multitude was astonished at his teaching. And when evening came they went out of the city. As they passed by in the morning, they saw the fig tree withered away to its roots. And Peter remembered and said to him, "Master, look! The fig tree which you cursed has withered."