This nature is full of secrets. From ages man is engaged to reveal these secrets of nature. But even today he is unable to disclose the deep unknown powers. Man thinks that he has conquered the space and trying to find the new places in the universe to destroy the holiness with his inhuman activities. As far as he has invented destructive weapons and far reaching spaceships, the nature on the earth destroys a vast area taking the form of Tsunami showing that if you don't like to live peacefully with harmony and love, so why should I help you to maintain peace. In such conditions meditation is the only way which provides you with mental peace and cosmic energy to remain in total peace. Meditation is the stage of mind in which a man cuts himself from the outside world and joins a new world in which he finds himself in the company of his ideals. In olden days Rishis and Sanyasis ( Saints ) used to live in the forests in the company of nature. There they used to meditate and create a peaceful and beautiful world around them. At that time even animals understood the feelings of one another. This was the result of meditation because during meditation a man cuts himself from the outside world but internally he connects himself with the universe and with the help of inner soul he connects himself with the Super Power ( God ) which regulates the universe. During meditation when you connect yourself with the super power, automatically you get connected with whole of the living world containing a part of it. The power that you gain during meditation provides you the peace of mind and a new energy to perform your daily works. Besides this you attain the power to concentrate your heart, body and mind to perform your works successfully. If we try to find out the secret of success of our great personalities, we realize that the main reason of their success was to work whole heartedly. This body is your kingdom provided by God in which your soul is the king. Your Karmendriyas ( Sense Organs ) form an army to protect you from the outer world. Your heart ( Mana ) is the commander to control your Karmendriyas ( Sense Organs ), but you should have to strengthen your heart to control the army of Karmendriyas, otherwise your Indriyas ( Sense Organs ) will be out of control and the Kingdom of body will be destroyed. The only way to empower your heart is Meditation or Tapasya. Soul is the king of your body which can neither be created nor be destroyed. To keep your body safe from destructive powers, it is necessary to strengthen your heart so that the Indriyas ( Sense Organs ) can be controlled and this can be done only by meditation because meditation gives you the power to attain the cosmic energy. Meditation fills your soul with a joy which can not be expressed in words. It can only be felt. The shining of this joy can be seen on your face. While meditating one should himself fully concentrated otherwise it may be of no use for your body and mind. In Bhagvad Gita it has been said clearly by Lord Krishna ;

Karmendriyani sanyamya,

Ya aaste manasa smaran,

Indriyarthan vimurhatma,

Mithyacaraha sa ucyate.