Observe Mouna, or Silence, for a couple of hours daily at any time that suits you. Try to speak little at other times. Avoid unnecessary conversations. Don't talk harsh words and obscene language. Talk sweetly and gently. You must have perfect control over speech. Control over speech means control of mind. The organ of speech is a great distractor of the mind. Silence gives you peace. It removes anxieties and quarrels. It develops your will power. It conserves energy. It reduces the force of Sankalpa or the thought current.