It seems that it is impossible to live without discovering the purpose of your life. And the first thing which a person should do is to understand the meaning of life. But the majority of people who consider themselves to be educated are proud that they have reached such a great height that they cease to care about the meaning of existence.
The real purpose of our existence is to understand this limitless life existing in this world.
A person may not know the purpose of his life, but he should know how to live. A worker at a big plant may not necessarily know the purpose of his labor, but if he is a good worker, he should know how to do well what he should do.
Every living being has sensory organs which reveal to it its place in the world. For a human, the primary sense is the intellect. If you do not know your place in the world, the meaning of your life, you should know that there is something to blame; and it is not the social system, or your intellect, but the way in which you directed your intellect.