Continuous thoughts in mind, whenever i try to meditate!

Question : I am a beginner in the field of meditation. Whenever I sit for meditation, my mind never relaxes itself from thinking. Even while sitting quiet it keeps on thinking. It happens to be quieter in an introspection of what has happened? Where do I go wrong? But if meditation means doing nothing, not even thinking, then what should I do? Visit http://www.gurumaa.com for more videos