At first, I didn't want to tell anyone. I told everyone when I pursued a gastric bypass 10 years ago and ultimately was talked out of it. A bunch of comorbidities, a nephrectomy, and onset of type II diabetes later and I am going to take the necessary steps to ensure the best life possible now. I was angry that I wasted my twenties listening to all the naysayers. I was angry at everyone including myself. The only person I told at first was my mother and even she upset me though now I realize it is the concern appropriate for any parent to show their child.
Then during my pre-op counseling I realized that the surgery was nothing to be ashamed of and that if I could not stand the criticism of friends and family I would probably not be in a good place to share myself with the world after my surgery.
Now I've told everyone in my life. I will admit, there has been negativity, and doubt casters but I have dealt with it quickly and without my own negativity because I know their concern (for the most part) is coming from a good place. Those of them that don't wish me well I only use them for motivation to make the most out of this second chance at life. Being open about my decision and having the support of my coworkers, friends, and family make me feel more confident and stronger on my path towards a thinner and healthier me.