A mirror's a mirror, right? Unfortunately not in all cases. Some of us look at ourselves in a mirror and see something completely different to what others see in the same mirror. Such has been my experience doing makeover.
SO WHY THE DIFFERENCE?
It's what our mind tells us we're seeing, not what we're actually seeing.
I'm no psychologist, but I know through years of my own experiences, that what we feed our mind with is what we start to believe.
With regards to ourselves, we invariably concentrate on the negative things - look at my bum, my stomach, my wobbly arms et cetera. The irony is that they're often things that no one else notices, or certainly don't pay much attention to. And if they do, who cares!