And what KIND of foods are you eating? Protein and fiber. Fiber and protein. Those are highly filling foods. With lots of staying power. Empty calories won't sustain you and keep you satisfied. Quality of calories REALLY matters. I also eat frequently, never allowing myself to get too hungry. Protein and fiber. Ones with lots and lots of volume. LOADS of veggies, veggies and more veggies. Big serving sized portions. And I drink lots of water and tea, as I find it to also filling.
I don't know how long you've been on WW, but if you're already thinking about throwing in the towel, instead of tweaking your foods/plan, perhaps it's time to forget about motivation and work on COMMITMENT. Making a lifestyle change is not easy and takes time. IMO, it just won't happen without an IRONCLAD COMMITMENT. This way you do it whether you feel like it or not. You do whatever it takes. What ever is necessary. Whatever is required. Period. You make no excuses. You find a way to make this work and then you work it, work it, work it.
Losing weight and lots of it is doable for anyone and everyone. Yourself included. So make that commitment, that ironclad commitment, and then there's no way that it can't happen.