Conscious Self-Deceit

It seems to me that conscious self-deceit is the worst, isn’t it?

Conscious self-deceit is rare because it implies a great development of consciousness together with a perverted will to deceive, which leads to the most dangerous kind of falsehood; but it is perhaps also the easiest to cure, for the consciousness is already awakened and it only has to be made aware of its mistake and to take the decision to correct it in order to have the power to do so.

Others must first become conscious of what they are doing and this usually takes a long time.

Ref : On Thoughts and Aphorisms