Losing weight especially with that much scrutiny where you track everything can definitely make you neurotic about what you eat, and mess with how you perceive yourself (i.e. someone looks perfectly fine but their eyes just laser focus on a tiny bit of fat on their belly and they think they're obese because of how critical they were).

With stuff like that it helps a lot to journal but in a way where it's not hypercritical / nit picky / focused on every little detail but just slightly broader strokes in my experience to keep it healthy & sustainable (not messing up how you perceive yourself)