I lost the 100 lbs over 8 months with a doctor the first four months monitoring an extreme low cal diet of 1000 calories i ate what ever I wanted just 1000 calories of it, I walked 30 minutes a day and on fridays (I was doing full time school and part time work so I only had fridays to work out) I did 1 hour of cardio and Saturday id do a 2 hour walk.
Ive only gained back 10 lbs which I lost when I started this fast food diet (for the fast food I eat chicken soup and fruit from chick fil a, or chili from wendys, fruit and walnut salad from mc donalds, grilled chicken strips and fruit from jack in the box, side sampler from Boston market to name a few items) and for my non fast food meals I eat a bowl of broccoli with a piece of chicken and a cup of skim milk and a slice of whole wheat bread (that meal is to balance out the otehr stuff)
The main focus of the 1000 calorie diet was 3 meals of 250 calories and then to snacks like fruit or veggies it worked awesomley. I took a multivitamin and one of my meals out of convenience was a complete meal shake again to ensure I was getting all my vitamins and nutrition. I got to see a dietician once a month and everything who found it interesting i learned to make 232 calorie mini pizzas haha and a bunch of other odd 250 calorie recipes he told me to write a book haha. Anywhoo over the 9 month period I only cheated Christmas Eve and Christmas Day and New Years Eve, and My Birthday and I felt so good about myself for not cheating on the diet.
Be strong Dawn and on your diet do what I do...have one treat day a week so for one meal eat something naughty like a cheeseburger or french fries then be good the rest of the day.
Best of luck!