VSG or LSG

Hello.... I do use My Fitness Pal App. My Dr. referred me to John Hopkins Bayveiw, I was just a little curious of the process & it's best to here from both sides. I notice some people has harder time than others. I been trying to do this on my own but nothing I do seems to work long term. This will be major for me so I just like to have a few point of views. Thanks for your time!