99% of all diet aids stimulate the central nervous system, rev up the metabolism, have a lot of caffeine, and create more problems that they solve. The rate of heart palpitations even from those energy drinks is horrifying - ask any paramedic how many calls they have related to too much caffeine. And the "crash" from these products really works over your body.
Weight Watchers is about counting calories, basically - but it's simplified in giving a point value to foods so that you eat more of certain ones and less of others. But a lot of doctors (David Perlmutter is one) who is questioning all the advice that we've been given over the past 20 years about low fat and tons of fruit/vegetables. He looks at the effect on the cells of stored sugars (such as in root vegetables we've been told are "healthy" and "unlimited"). Others question carbs - same thing, with carbs going to sugar. Others note that we have thrown out fats, and in the process given up all the healthy fats that we need. After decades of "low fat, high vegetable" diets we are still fatter and more unhealthy, with higher rates of diabetes and metabolic syndrome and cancer.
Others say that the reliance on processed foods is a huge problem - and that includes the prepared meals from NutriSystem and Jenny Craig and those companies. They're expensive. Yes, the celebrity spokespeople lose weight, but so would you if you had food delivered to you and had a personal consultant and could afford a trainer and they paid you $50,000 to follow it, right? They do help with portion control but they are not cheap. If you can't afford a treadmill, you can't afford these meals or any diet aids.
And most of the time, diets put your body into starvation mode, so the metabolism slows down and food is stored as fat - it's an evolutionary response that prepared our ancestors for periods of famine.
As to "do you have to stay on them for life"? - well, what got each of us into our weight/illness situation? And why would we go back to it?
Everyone seems to agree though - it's not about "diet" as a temporary fix. It's about a lifestyle change.
It sounds like you have a weight problem, a stress problem, a lack of activity problem, and some clear issues such as reflux. That tells me, as a professional, that you aren't getting effective use out of the foods you are eating. It's not about the "blame game" either - remember that most of our foods are far more nutrient deficient than they were a few decades ago. Depleted soils, mass growing techniques, food processing, and the preponderance of genetically modified foods have wreaked havoc on our food supply. A peach in 1950 had as much Vitamin A as 22 peaches today - and panels of doctors and nutritionists have calculated that, just to get the nutrients we really need, we'd have to eat 5000-6000 calories a day! So we're really starving for nutrients but we eat and eat and don't get them. Food is stripped of its nutrient value so that it has a longer shelf life, produce is gassed so it lasts on its journey rom the other side of the world to our table without rotting, and we're feeding an inappropriate diet to our food animals (cattle and pigs are eating corn - but that's not what they should be eating!). Try finding a loaf of bread that doesn't list "enriched flour" as its first ingredient - that's wheat that's been stripped of everything, and then a couple of stray vitamins thrown back in - it's not what grew in the fields in our grandparents' time. And the info on GMO foods is alarming. But the big money is in big production and price supports and subsidies for the agribusinesses that get food to use cheaper.
For me, based on my work and seminars I've attended for years, the answer seems to be in cellular nutrition: getting non-GMO foods in a highly absorbable form right to the cells, ensuring optimal nutrition and all ingredients together (rather than vitamins isolated and taken here and there, without their essential "partners" that allow them to actually work), and looking at the emerging and very promising science of epigenetics that allows us, using food, to repair our mis-firing genes and let our bodies heal. That's been my focus, and I've seen tremendous results with weight, cholesterol, food sensitivities, allergies, illnesses, and so on. It's billed as the nutritional breakthrough of the century and there are no side effects. I've saved a fortune because I never need the doctor, I've gotten off 4 prescriptions, my lab work is awesome, I have more energy to exercise, and I never even spend money on tissues and cough medicines and pain relievers for fever or headaches.
But whatever you do, don't go for a diet fad - you'll probably cause more harm than good, and waste your money.