Drugs don't help.  They're just a quick fix.  Trust me on that one.  They begin to stop working very quickly, and you find yourself taking more and more.  I got up to a very dangerous amount, because sleep became an addiction, but the only way I could sleep was to take those pills (which no longer worked).  Lately, I've been using what's called brainwave entrainment.

Basically, our brainwaves resonate at certain frequencies depending on our state of consciousness.  An alert "beta phase" is 14-30Hz.  The alpha phase is a very relaxed one, but awake.  This is normally the resonance achieved through meditation, but can also be reached by relaxing on your sofa watching TV.  It's around 8-14Hz.  Theta stage is achieved during sleep and REM sleep and is 5-8Hz.  And the delta stage is deep sleep at .5Hz to 4Hz.

These frequencies are inaudible to the human ear (veeeeeeeery low bass).  If you play two different frequencies in two different ears that ARE in audible range of the human ear and they are less than 30Hz apart (500Hz and 510Hz, for instance), the sine waves for each will resonate in your skull, canceling each other out, because by virtue of being two different pitches so close together, they are out-of-phase.  What ends up happening is called a binaural beat.  The sound like be like a flutter or a pulse, the frequency being the difference of the two tones.

Your brain will interpret the difference as what it needs to attune to (like two tuning forks attuning to each other) if you meditate on the beat.  you can try to do other stuff, but it's really weird, because your brain will try to attune regardless.  In any case, you can bring yourself into theta stage using this technology, or delta stage, and it can help a lot in getting you to sleep by "tricking" your brain.

Just uh... never operate a motor vehicle while listening to a binaural beat.  Even just walking around is really weird.

http://www.bwgen.com/theory.htm
http://www.thethoughts.co.uk/online-brainwave-entrainment-center/