I really wanna help. My biggest problem is that i expected results too soon. You have to be patient, and find a plan that works for you.
Personally, I developed my own kinda plan (still working on it).
I reccommend finding what your BMR (basal metabolic rate) is, this is how much calories you can burn by just lying in a bed all day (bmi-calculator.net). Cut that amount by 500 calories, and this is what you can consume in a day (suppose its 2500 calories, then you can consume 2000). Therotically, this alone should drop a lb a week. Incorporate some exercise, and if you are burning 500 calories daily, you could, therotically, lose 2 lbs a week.
Make sure too add enough protein to your diet (to maintain muscle mass). For me personally, spread out the meals, have 5-6 meals a day, ranging from 400-300 calorises (less or more, for your metabolic needs)
Hopefully this helps. Myself and many members (such as RJ) has found a lot of success in using math to your advantage of losing weight.
edit: this applies to people that are very obese in the first place. If you are some what near your goal weight, new rules may apply to the game.