Most Helpful Guy
I would guess it's the lighting, if you get a mirror where it's a lot of natural light, and not light shining at the mirror or you, that would probably be the most accurate.
Most Helpful Girl
I look fine in my own mirrors but my self confidence drop a huge amount when I'm in public and I refuse to look in mirrors when I'm out because I know I will see only my flaws.
In other words it's about self confidence and the lighting (florescent lighting is the devil)