"I'm fat". How many times have you heard that, either from your own lips or from a friend? Statement of fact. "I'm fat".
It's a toughie. "I'm fat" is a one-way ticket to feeling like crap, trying on every damn thing in your wardrobe before deciding on the tent like thing you tried on first, and to start the day feeling not good enough before you have even set one foot outside the door. "I'm fat" is a judgment that comes loaded with unsaid whisper of not good enough, lazy, useless.
"I'm fat" becomes wrapped up with who we are, a judgment on our own true self.
"I'm fat" is a lie. It's not true and continually repeating it to ourselves only keeps us more stuck in the cycle of overeating or under-exercising. When we believe "I'm fat" it's hard to stick at healthy eating or the gym as why bother? It will make little difference and even if it does it won't last. The activity is temporary whereas "I'm fat" is forever. It's a part of us.
A part of who we are.
Except it's not. "I'm fat" should not be used in this way. It's not a useful description of a permanent characteristic, like "I have blue eyes" or "I'm 5 foot 4".