Meditation is something to be learned. I've only just begun recently, so the other shroomerites that meditate can probably give you better answers. I got inspired by a religion class I took in college. WE meditated for the first 15 min of each class.
I suggest sitting or lying in a comfortable position in a dark, silent room. Relax your body so there is no stress whatsoever. breathe deeply, and clear your mind completly. Concentrate on one aspect of your breathing, such as the rise and fall of your chest, or the way the breath feels leaving/entering your body...this is hard to do at first, and thats why meditation gets easier over time. you just need to work at it. good luck

there is another post on meditation somewhere around here.......hope i helped

At the starting point, meditation is meant to tame the mind. All the time it is jumping hither and tither, constantly reinforcing inaccurate notions of who we are and what we think the world is. To truly experience ourselves as we are and the world as it is we need to be able to sit with ourselves in the world and practice just being. Just being is harder than we might think it is, so that is why we practice.

The technique is to sit crosslegged in an upright posture, with your ass a few inches higher than your knees. Keep a straight spine, your eyes open and rest your hands comfortably on your lap.

Because we don't know how to simply be, we need a reference point which is the breath. As you settle down, loosen your shoulders and neck and focus on your out breath. Follow it as it dissolves into space, and wait for it to come back and go out again. So we constantly let go of our breath. Since our minds are not trained we need to be aware of our thoughts. The teaching is to "touch and go". We don't follow out our thoughts, we notice them, and let them go. The idea is to not get caught up in fantasies and plans and all sorts of other things, but we should be aware that the mind is thinking when it is. Don't try to stifle your thoughts, (it is impossible), just let them go. Relax and stay with the breath. The gaze is a feet in front of you, and relaxed, not looking at anything in particular. This practice is known as shamatha, or "calm abiding". It will improve the quality of your life.