Also may I suggest you get Gamblock or something similar on your computer so in moments of weakness this will not happen again.
Thanks! I will look into GAMBLOCK, but if it's just a case of installing some programme, when I get the urge, I would just uninstall it!
EDIT: Just looked it up, seems you can't merely just uninstall Gamblock. It's rather expensive though. Although for what it does, maybe worth it. Thanks again for the advice.