You can try listening to the Sleep Induction Wizard which I have.
Sleep Wiz - Surefire Natural Remedy To End Insomnia Forever And Enjoy Energizing Sleep In As Little As 3 Days!
Basically you hear pulses which gradually slow down and the brain waves follow the pulses.
I also find that sweating in a steam room provides me better sleep at night if I haven't had a chance to detox for a while, like in winter.