Many people are addicted to chocolate and if you choose the right chocolate - dark and high in cocoa mass you may even be doing yourself some good. It is high in antioxidants and prevents many nasty diseases, if you consume it in moderation. You can buy sugar free bitter sweet chocolate as well.
Only you can control what you put in your mouth, Good luck and stay well.
pure sugar addiction is mutifaucted and hard to control i have heard the chocolate you speak of is ok