For me it was the birth of my son and realizing I needed to do something for my health if I was already 36 when having him and want to be around long enough to see him grow up and have a family of his own. It took me a year to finally go ahead with surgery, but not long after I made the decision, my father had a stroke, which helped reinforce my decision, as my father is not obese, but there are other health issues in our family as well. Might as well address the ones I can in hopes that it helps avoid the others.