What are the three Doshas or faults in the mind? Give a concrete illustration.

The three doshas are Mala or impurities such as lust, anger and greed, Vikshepa or tossing of the mind or mental oscillation, and Avarana or the veil of ignorance.

There is a muddy lake covered with moss. The wind is blowing hard. Now, the lake is the mind. The muddy condition represents Mala. The agitation of the waters that is set up by the wind corresponds to the Vikshepa in the mind set up by the vibration of Prana. The moss that covers the surface of the water represents the veil of ignorance.

Swami Sivananda