I take several breaths thinking about my pillow, bed, covers, and position; get comfortable and relaxed; and try to clear my mind. Then i start at my feet relaxing each body part for three breaths, feeling it sink into the bed and focusing hard so other thoughts can't creep in. If i get distracted and wander, i start over. I'm usually asleep within a couple of minutes. It took me awhile to learn to do this and to keep my brain blocked. What I've learned is that sometimes it's not 'can't fall asleep' it's 'won't fall asleep,' i have this great method that works almost every time, but sometimes I'm resistant and still staring at the clock. Then i think, "knock it off! You're self sabotaging!" and force myself to follow through.