Hall of Mirrors.
When you go in, you encounter not a hundred mirrors, but only a small handfull.
But three of them are set off, to the side, like they shouldn't be looked at.
When you look into them, you see three different things, depending on which one.
In one, you see yourself as a failure, a glimpse into the very worst that your life could bring you at this point. Everything is ruins, destroyed, your touch makes the world bleaker. From this view, it is horrible - the thing you love the most is gone. Because of you. Something simple.
The second shows what appears to be another world - your life, full of joy and mirth, things you could aspire to, to be, to do, to understand, to make right, to make proper. It's subjective, but within these gudielines.
The third one is covered in a sheet. When it's lifted, the sheet covers the one looking. They are pulled to, into the mirror. And here, they are on the other side of it. The world of illusion, of seeing things from the other side of the world. It's cold, but not enough to shiver, it's dark, shadowy. And there's something coming for them. When they run to return to the portal, they fall backwards, out of the sheet, which falls to cover it again.
They were wondering why they just stared at it. They were quiet, and they can't quite remember what was chasing them.
But from now on, they can feel something watching them from the edge of a mirror, or any reflection. They are quickly hurried out before they can investigate.
Hope it's not too lame.