Decided that you need to lose weight! Tell me how?

Hello everybody! I lived to the point that I began to weigh almost 90 kg, and in fact was once a slender woman))) I tried a lot of different ways to lose weight and they even helped me for a while, although the weight always returned and even in positive territory. Always thought - why do I have such a problem, because some of my friends and eat more and are nervous no less, and skip like a slender goat. Apparently the age makes itself felt, and constant stresses. I've been working as a chief accountant all my life - solid nerves! Recently I met (I have not seen each other for many years), I was struck by unprecedented changes - I lost weight and got prettier, said that I was in the center of Bormental. I went to their site, a lot of general information, and photos of customers are somehow unreal !!!! Advise - is it worth to go there?