Yes. Right from the start I commited to change for ever. I knew what I should eat for a healthy diet, but being on MJ made it easier for me to make those choices. Firstly I wasn't so tempted by sugary treats, crisps and alcohol. Secondly my appetite was smaller so to be healthy and to up my exercise I had to pack as much good nutrition into every bite I was eating. I helps that I like planning and cooking.
I was also fortunate to have the support of a fantastic group of people who started this journey at the same time as me. They are funny and feisty and between us we've lost a hell of a lot of weight. 15 months in and many people are at or approaching their goal weight, so the talk is on maintenance. We encourage each other to eat well and share tips, recipe and information about helpful products (the supermarket ranges that are not UPF).
There are also other similar threads full of inspiration and ideas of what to eat in a day. There are discussions on how to get sufficient protein and fibre, and eat a wide range of vegetables (without resorting to protein shakes). It's all quite uplifting to see the stories of people who have stopped taking WLI and who have maintained their weight for many, many months, as well as those who are cutting down on the dose successfully [assuming that everything you read on mumsnet is true!]
I've also being doing weights at the gym, walking much more, swimming, and have started pilates - all so much easier at a lighter weight.
Finally, for some people being obese for a lot of their life time would have scewed their metabolism leading to insulin resistance, high cholesterol, high blood pressure etc. Maintaining at a healthy weight has restored how their metabolism should work, reversing diabetes, regulating other hormones and allowing them to manage their feelings of hunger and satiety.
I am now on the lowest dose and intend to stop completely when I am confident that i have learned and ingrained the good habits and lessons, and that I can manage to lose (for example) a couple of post Christmas pounds without resorting to WLIs or diet shakes.