Be Silent yourself, that will induce Silence in others. Do not fall into the habit of shouting, talking long and loud. Reduce contacts to the minimum. Carry with you an atmosphere of quiet contemplation, wherever you happen to be. The less you talk, the more will become your mental power. With the increase in your mental capacity, there will be increase in your power of discrimination too. Consequently, you will give up "individual discrimination". Because of this, you will begin to consider the good of the world at large rather than your own individual welfare. You must cultivate such broad feelings from this young age itself.