Today's world is ruhing. We need to be active, we must be ready for rapid chages. Moreover the resposibility we have nowasays is growing from day to day. If we want to life whealthy life, we have to manage all these things. Plus this everyday's challenges at work, at home can be stressful. We just don't have enough time to stop and feel what we really want. We don't know exactly what can make us happy. First of all it is beacause we all depend on the society. It is very important for us to see that other people believe in us. Also it is because we aren't able understand ourselves.