There's also a reason why people keep going back to things like Jenny Craig, WW etc. Because they don't address the real issues people eat too much. For those who can Point, and Syn, and follow other diets, and keep the weight off it's a great thing. But for many, many people they are constantly looking to the next new diet, and failing like they did on the last. Because the real reason they're carrying extra weight is FAR more complex than they're simply eating too much. And I gave the link to one blog, because it gave a simple explanation. There are thouands of sites with scientific basis, so no I'm not going on one blogger's opinion, but I appreciate your concern.
Intuitive eating isn't about portion control, but if you really, trully tune in to eating, you realise you need less. But also things like smaller plates help. Crockery is huge these days. Part of me wants to chuck out all my current plates and bowls and get smaller ones (secondhand from the 60's and 70's maybe?), because when we eat with our eyes, if we're eating from a plate only half filled with food, it can send a message to our brain that we're starving ourselves
Exercise is a big thing though. It's something your body loves and appreciates, but it really should be something you enjoy so you actually benefit from it physically and mentally! Whether it's running, the gym, or an exercise DVD, or cycling, or skating, find something you love to do and do it!
I'm not saying my way is the only way to do things, but the OP asked advice so I'm offering mine.
Tuning in, mindfulness, choosing to eat healthier choices isn't a quick fix solution, and in this day and age it takes far more concentration. Most of us are zoned out far more than we're zoned in. And little things like sitting at a table, turning the tv off while you eat, can make a huge difference to how much you eat