Confused by a potential thought

This is in response to my previous question about how I already believe my thought “I will be 100 pounds”. Your suggestion was to work on believing “I am 100 pounds”. I am having trouble with this because this seems to be arguing with a circumstance…which we know is pointless. My weight on the scale is 117. That is a fact/circumstance. Can you explain your interpretation of this?

Do you mean something like “I’m meant to be 100 pounds” or “my true self is 100 pounds”? Because I can work on believing those and I’m probably 50% there. I just don’t quite understand the “I AM 100 pounds” thought. Thanks for your clarification!