Help me find the determination

Well, I have now plateaued.  I finished the Slim-Fast diet.  Although I did well and lost quite a few pounds, those are quick fix diets that are not long-term result oriented.  I want to change my lifestyle not just quick fix and then gain it all back.  I am down to 250lbs now, but I have lost my determination.  I have the same problem as millions of people in that I love food.  I know exactly what I need to do to lose the weight and I want to lose the weight but during the day I am cooking something and say oh, that looks good.  I want that.  Or I don't have time to eat during the day and then pig out before I go to bed.  I have probably stretched my stomach out so that it doesn't register it's full until it's too late.  I have tried many appetite suppressors.  Drinking water, drinking water right before eating to make you feel fuller, high fiber foods, acai supplements, and others.  All of them have the same results.  I don't notice a difference and eat too much at one time, then I feel bloated and over full for hours afterwards.  I need to find something that stops me from over-eating!  The battle continues...