Same.
For me my body does not function very well if I’m even 10 pounds overweight and I let it get to 40 pounds!
My thinking of my wight and food as I tried to lose it became obsessive.

To lose the weight I had to learn how to make the obsession work for me.

I did this by being real honest about what I was eating and why, writing down everything I ate though out the day as well as my feelings about it. Once i wrote it it down I could stop thinking about it.

By being honest I could easily see the reasons behind the wight gain and make better choices and avoid the labeling myself for those times where my choices were not the best.

Like natachamonic I stopped trying not to think about food and instead just notice, without self judgment, when I did. the ego not as judge but as observer