I use to lie about it, hide it, make excuses, etc. I had a million tricks to deal with or avoid social situations where I knew eating someone else's food would be a problem, or going to a new restaurant, etc. It definitely made dating interesting when I was a young woman. I hated sleep away summer camps.
Honestly, I had no interest in making changes or losing weight until I became a parent. I'm not saying you have to be a parent to be motivated enough to change, but for ME, that was the thing ... everybody has their own thing. My kid wanted me to swing on a swing and my 325 pound butt would not even fit into the swing, and it was humiliating. I wanted to be an active mom, around for a long time, and I knew I was morbidly obese. The only way I could tackle the obesity (for me) was to tackle the relationship with food. Longevity is my main motivation. I now have four kids. I had my last child at nearly 39 years of age. I really want to live a long time to see grandchildren etc. I still struggle. I had to force myself to learn to cook. But I'm light years beyond where I was.
Now backing up a bit; since I pretty much became responsible for my own food at age 14 ...it was pure freedom to me. I loved it. But with freedom, comes consequences. While I was making all of my own choices regarding food, I was making terrible choices. In every other area of my life I was very driven, did well in school, worked hard, responsible, very active. I only had one sibling and he was gone from our house by the time I was a teenager, so I think my parents just enjoyed the ability to have meals just the two of them and not stress about me. I remember my Dad cooked on weekends; but I loved what he made, pancakes and bacon, so I guess we had that one weekly family time together, every Saturday or Sunday morning.