Everyone has a burden, their own cross to bear, their specific demon, their Achilles heel. However you say it, every person is dealing with something.
Unfortunately, obesity is a totally visible fight. You don't have to talk about it publicly or even acknowledge it, but there is no denying or hiding it.
It is frustrating. Someone can be a complete and utter asshole, or ridiculously lazy or even dumb and they do not get the public scorn that an obese person gets. For example, an obese person's PERCEIVED laziness is often judged more harshly than a thin person's ACTUAL laziness. "Why don't they just work out?" "Why don't they just eat less?"
Why don't you just not be a jackass?
The older I get, the more I realize that other people's opinions of me are less important than how I feel about myself. If I am kind and my loved ones can rely on me, I can go to bed each night knowing that all is good in the world. When I lash out and say something mean or I gossip or I hurt someone's feelings in anger, that's when I start getting anxious and insecure. When I'm living right, the anxiety and insecurity melt away.
It took a while, but I believe that this burden has helped teach me humility and charity. I may have some pretty ginormo thighs, but I would like to think that my pretty ginormo heart is what leaves the strongest impression.