Sleep Where Have You Gone?

Will I ever be able to go to sleep at a normal time every again? Will I ever just be able to just lay down and then 20 to 30 minutes later fall asleep? I have tried EVERYTHING that I can think of. I took something last night that I was sure going to knock me out but NOOOOO it didn't, I was up until 5 this morning. I layed there for about 3 hours trying every sleeping position possible but nooo nothing did it. I am tired of being tired and bot being able to sleep. Then I have to get up with the kids running on only a few hours of sleep. I found out sleeping on the couch helps I can fall asleep on the couch no problem but I would rather be in my bed and my husband would rather me be in my bed.. I want to be able to have a nice relaxing good night sleep in my own bed.... Sleep come back to me......