Hi, mrhide, welcome to PsychCentral. Did you ask your doctor who prescribed it? It's mostly for sleep so I wouldn't want to take it during the day. Have you tried taking it at different times of the day?
It causes both tolerance and dependence so you'd end up in a mess over long term I think:
http://www.netdoctor.co.uk/medicines/100002841.html
Ask your doctor about how it works and if there are other drugs that one can switch out with so one doesn't become tolerant or dependent. Too, are you in therapy? My anxiety was "fixed" for the long term with therapy and I don't take any meds. Maybe a combination would help so you didn't have to take the Zopiclon so often?