Mindfulness meditation is practiced sitting with eyes closed, cross-legged with the back straight. You can sit on the ground or in a chair. Play close attention to the movement of the abdomen when breathing in and out and on the awareness of the breath as it goes in and out the nostrils. Relax and let the cares of the day fade away.
When you first begin meditating it will likely be very difficult to relax your mind. But like anything, practice makes perfect. With a little bit of time and practice you will begin to relax and experience the benefits of deep meditation.