Lying flat on your back, place a pillow between your legs. Bend your knees so your feet are flat on top of your bed. Cross both arms over your chest. Roll onto your side, making sure your uninjured leg or hip is on the bottom. Place one hand on the mattress and straighten your legs with your feet near the edge of the mattress. Gently push yourself up using the hand on the bed. Swing your legs over the side of the bed. Sit up straight.