Urgent help! do you have a scription to overcome insomnia?

My doctor was very concerned about me as far as my lack of sleep wa concerned, she told me it is a motter of routine, you must teach your body through routine, she explained nature puts the lights out for us to sleep it also thins the air and slows our bodies down so she told me I should go to bed before 12midnight much earlier if possible, I must make my bedroom a sleeping room, no TV no music no reading, just sleep so your body knows sleep time....and I must admit it has worked most nights now unless like to night I have too much on my mind but I am off to bed right now. :)