Hi and welcome from me as well.
I am on my second week with weight watchers myself, but already lost some with healthy eating. I am like you. I have tried most diets available over the years and I continue to be overweight. What keeps me on track is the thought that I want to do it this time, for me, for my life, for health, for pretty clothing. I break up my goal in smaller goals, reachable so I don't get caught to think: "1 pound, that's a small loss to what I have to loose" a loss is a loss and its better than not trying and staying the same or even putting on. The time flies by, and maybe not the first week, but in some weeks time you will notice looser clothes and people's comments. That keeps me on track as well. I much prefer myself now than when I was at the beginning, late January so I wouldn't want to change that for a massive binge! Also WW let's you track a treat like a kinder bueno, but I try not to do that as that would take away a meal and its not healthy! Of course I will do it if one day i want a treat real bad but not often! I tend to think that thin people watch what they eat every day so that will have to be my attitude and the high calorie treats should only be a once a week or twice a month thing. Doable! If I want a treat on a regular day I just have a tiny portion to get it out of my system and be within my points! And last but not least, as everyone else says, PLAN AHEAD!!!! If I get caught without planning one day, I end up with meals of higher points and eventually hungry.... I always take my food and snacks to work with me and I don't eat what people bring there like sweets! And because I am sick and tired of washing up, I even treated myself to a number of single use food containers so I don't have to wash them and I just throw them away. You can definitely do it. Believe in yourself, people start journeys to loose 100+ pounds and they manage to do it eventually! So can we! Best of luck! Keep posting here as well as that will help you too!