Where are the mirrors?

Following the previous post Do you have a mirror? I received a comment from my brother mentioning another sample reference to the magic mirror in a (perhaps) religious saying:

"The way that you see (imagine) death, is a reflection of your true self."

It should be a religious saying (not sure though). So, if you see death as a monster, your true self could be monstrous and if you see it as a beautiful angel then ...

So if you think of it, may be you can find a few things that could act as such a mirror. A true friend, the imagination of your death, ... what else? There should be more. And it could be different for different people, some may need a true friend; some may find a meditation on their death and after life to see what truly lies inside them. Where do you think your mirror is?