Learn this meditation from the following video: (practice it to learn)

Also study this article: What is meditation? How to practice meditation.

Practice meditation regularly, and peace will increasingly be created within your mind. In the beginning it may feel that there are more thoughts in your mind, but this is because you were not aware of them before. Keep at it, develop your concentration (meditativeness) through regular practice, and you will learn how to create peace within your mind, and live life from this state of peace.