How long you been taking zopiclone for?
I've read it has some serious side effects, some related to mood issues (Source drugs.com) it would explain the crying spells..
Tapering it off would be the right thing to do, switch to liquid form and lower the dose by 2 drops every week. I did the job for you and I already seen that unfortunately theres no liquid form of zopiclone so the things are 2 try to take half dose and see if you can sleep if not switch to a similar med, Diazepam will do the trick, get the liquid form and start with a dose relatively similar to the one u on right now since I don't know I can't tell but I'm sure Google will answer your question.. Next lower the dose by 2 drops each week, it will be lenghty but it will be worth it. I'd suggest to talk to your family doctor about your situation be more specific with them and ask for some blood tests to rule out that you don't have something serious going on, and don't panic you'll be alright
Take care
M