Why can't you get started?How many nights do you get ready for bed and say to yourself: "Wow, I really ate too much today. Tomorrow I need to start losing weight"?
How many mornings do you weigh yourself and say: "This is it. Today I get control of my eating"?
Then you have a big breakfast (after all, you've heard that is good for you) and maybe a pastry or other mid-morning snack. Next there's lunch with a friend (where you eat more than you should, but stop paying attention half-way through the meal).
Maybe some chips, nuts or cookies in the afternoon (a bag could have 600 or more calories and lots of fat). If you don't also go out for dinner, you may "just grab something" (that happens to be calorie-laden). Or you cook something delicious (maybe something also loaded with calories) -- and over-eat that.
Lastly, there's the popcorn in the evening (not the buttered kind, so it can't have many calories, can it?). And maybe some wine or other beverage to go with it.
Oh well, there's always tomorrow.