Go through your body from the head down, tensing each muscle for a few seconds and then letting it relax, one at a time. Then, work really hard at really envisioning somewhere, seeing all the detail in your mind’s eye. Focus on it. Imagine feeling the physical sensations of being there. The gentle sway of a hammock, the warmth of the sun radiating down on your face. Giving your mind something to focus on lets it stop being so active, and lets it relax. It’s like having the tv on late at night putting you to sleep.

With the physical relaxation from the tensing and loosening and the mental relaxation, sleep should come much easier. It does take practice though.