edit - ESSAY ALERT!!!
sounds liek what ever diet plan your on isnt working. hmmm i dont know about what your trying but this is the way it works for me...
i kinda lost weight as an accident, i turned vegan which is something i wanted to do for years, finally did it and didnt realise that weight loss wass a by product, ive now dropped from a size 24 to a size 14! now im not saying going vegan will work cos its fucking HARD especially if you dont believe the politics but when im eating i dont think of the food, or the points, or calories or whatever, i think of just food and how it tastes. i dont count nothing, i dont weigh or measure anything. my whole 'diet' is based upon my belief in it, and although people dont go on atkins for politcal reasons i beleive this mentality i have (the belief in something more than eating) can work for others also.
this sounds weird, sorry i cant write so well im dyslexic and find it hard to express things so sorry if this makes no sensce! but i think you really have to trust yourself and the food you eat, and you have to believe in yourself and what your doing is for a greater cuase than simply eating a cake e.g. slimming down, sorting your health out and improving your life. when i try and count calorys it just makes me feel like a pig, and makes me very aware of what im eating, for me this doesnt work cos i dont like to feel bad for eating cos its a natural thing right?
never think that you wont eat anything ever again, cos its bad for your brain body and soul. and its like when your a kid and mum says not to do something so you do it just for the sake of it. this often tripped me up at times...if you wanna go out and have a drink fair play to you. i managed to get clean from drugs and drink around 6 months ago and it took a long time to 'have fun' while out without, but now i cant remember what it was like to go out drunk. i guess you jus gotta train yourself tyo say NO and draw the line, between a few drinnks one weekend, or one drink leading to a week of binges. the same with food or anything.
i still go out, and eat crap sometimes (well not exactly crap like most people eat but vegan crap can be quite fatty, haha) and yeah sometimes have a few drinks. no problem. your human. but you gotta start seeing a 'diet' as permemnant changes to attitue to food and the way you eat drink and live. make small changes, cut down on the drinks bit by bit, or try a new drink that aint so bad for yah. food wise, the same. work on excercise also, but dont strain yourself too much. you wont enjoy it and believe it or not, i used to hate exercsie but due to adding a small bit to each day i now look forward to my morning bike ride to uni.
most importantly - look after your brain. dont stress about stuff, it makes you fat

if you make a 'mistake' just learn from it and move on, dont kick yourself. gotta make positive changes for life, not just for a dress size or two.
oh and going to parties and clubbing, if you dont drink or smoke, is bloody good for you. im a dj and most weekends am out, playing or raving often from 10 till gone 6am. its gooood excercise, you hear music you like gets you moving and the social element cheers you up. so get dancing
sorry for the long post, im in one of those ' i think im well clever' moods so if this post is rambling and rubbish then its jus mee needing some sleep.
peace x