Zopiclone 7.5mg! why did it not work?

Zopiclone is best taken on an "as needed" basis. If it didn't work for you once, I really don't think it's going to work for you again. Taking it every night would just make you build a tolerance to it. Try diphenydramine (Benadryl). It's available over the counter, and you can take up to 100mg at a time, which is the prescription dose. It should put you to sleep very effectively, and it's not addictive.