11 months is a heck of an accomplishment, but addiction doesn't really care if it's 11 hours, days, months or years...it can rear it's ugly head at any time.
Think logically for a minute about what would happen if you started drinking again. Your addiction would have you imagine fun filled evenings, women, excitement all around. What would really happen is you would just go back to being the same drunk you were before. The hangovers, the shame, the guilt, the blackouts....they are all part of the package.