Beautifully put, the best poetic description of introspection I have come across.
Jaga hua Zameer woh Aaina hai "Qateel"
Sone se pehle roz jise dekhta hun main - Qateel Shifai
Zamir meaning Conscience.
The best I can do at translating into English... (no poetry though)
"I look into the mirror of my conscience everyday before I retire for the night"