Life is full of anxiety and depression.

We see daily that our dreams are not fulfilled as we wish. Sometimes we are so depressed that we feel it is the end of life. No more happiness is there. But confident and brave people welcome such challenges with more confidence. As they know that is better for the development of our characters and upcoming life. That we will face and solve the more difficult task with more confidence. This is true, we have seen such people when facing any difficulty, they don't show any anxiety or depression. Among, my great father was one of them. He was a man of great character and virtues. 
Now, why does it come and develop in our bodies and soul?
The environment and family background play an important role in this regard. First of all the family background works, as the parents criticize the children without any justification. They consider it their right to show anger to their offspring. The purpose is to put fear in their hearts. Not to say a word or talk in front of me. 
At that moment it is workable but creates hatred and anxiety and depression in the whole body and mind. This kind of child always faces fear and uncertainty in their life. This is the one real fact of life. I have heard about this experience in our society. 
Another fact is the dominance of the environment, which compels the person to act according to the environment. The person has no option to behave against it. Slowly and gradually this illness developed and the person then did not show confidence and became the prey of this disorder.

Suggestions 

The suggestion in this regard is that the parents and the teacher jointly take it as their responsibility, that they will boost the confidence of the respective children. Not will hurt their feeling and discuss all kinds of their problems. As the children are their race which comes after them. So they face the difficulty with more confidence and will not be the victim of this and other mental disorders. We must give them good company and hear them well, is needed. 
It is not only sufficient to bring them the food items. What is more important is to bring them up with confidence and free of anxiety and depression. It must save them from environmental pressure and unusual criticism. The parents must be the precipice for their children. It doesn't mean false and unjust support in all his activities, whether he is right or wrong.
Then such a child will survive and not be the victim of anxiety and depression.