Make sure that you vary your breakfast, lunch and dinner as much as possible. I got into the habit of having cereal every morning and even when I was eating the correct amount for the day I didn't lose any weight. Therefore, cereal, etc one day, egg on toast another, etc. Same with lunch - I stuck to sandwiches everyday because they were easy and quick to eat at lunchtime so I had to change to salad one day, sandwiches another, a wrap another day. Also, I remember making up a large batch of point free (in those days) vegetable soup that I could drink to curb the hunger pangs, especially in between meals.
It has been a long time since I've been to WW but I distinctly remember this advice I was given to me by the leader, and it worked! Also of course, the exercise.
Hope it works for you even though my advice might be a little out of date!