Dust and ashes are the right environment when we have seen the living, holy, all-knowing, all-seeing, Creator of the entire Universe. Also, when we have seen our wretched selves.
Job:
I KNOW You can DO all things… … and that no purpose of Yours can be thwarted! … I have uttered what I did not understand! … Now by eye sees You; therefore I despise myself, and repent in dust and ashes.
When we get here in this life on this planet, we repent in dust and ashes!
The Good News 