I am 24 and have a lot of weight to lose( around 50 pounds). I managed to lose 10 pounds in 2 months with on and off dieting and exercise. I have had so many failed attempts and have lost and gained it all back so many times that I don't really know what to do. I feel demotivated and feel i'll give up in a few days after starting. This time around I am not even motivated to start. I just keep on procrastinating. I also feel awkward to workout in groups or at gyms with so many people around. My heart rate doesn't go up no matter how much I walk. I don't even know what to do anymore. I have a friends wedding in 22 days. I wanted to lose 7-8 pounds before that but I haven't even started working on it. Any help,motivation,anything is welcome.