I can tell you this much, one thing I learned fast is that is that I had to stop listening to other people on how to lose weight .. what I mean is those who would tell me how much water I should drink or how many calories I had to eat or not eat .. for some that might be good but for me a ton of water and 1200 calories a day was not going to work, this is what I do to give you an example:
Breakfast:
1 cup puffed wheat, 1/2 all bran with 1% milk (everyday)
maybe some fruit or low fat yogurt
Lunch:
sandwich, soup, sometimes just a couple slices of toast with cheese and fruit
Dinner:
whatever I want .. normally have fat free jello for dessert
Snacks:
fruit or sometimes I make muffins
Water:
1.5 liters Monday to Friday - weekends I split it over the two days
Exercise:
Monday to Friday - Walk away the pounds videos (I average about 17 miles a week) twice a day
No exercise on weekends unless I decide to take an outdoor walk
I am not telling you to follow what I do but it's just an example, some have told me I don't eat enough or exercise too much but I have lost quite a bit so I just go back to saying that you have to learn what is good for you.
I know you can do it, just be easy on yourself and over time you will find your own pattern
GO GO GO !!