Everyone is different, at 40 during my first attempt at weight loss I lost over 65lbs on wieght watchers 2lbs everyweek non stop it was great. I got hurt and quit smoking and put on 45 and just finished loosing it again but this time at 45 years old it was much harder I had a 2 month plateau. All you can do is give it your personal best and be honest with yourself write everything down and make yourself accountable. The weight will come off. Good Luck