Yes, I know what you mean. The easy part of self-deception is for the intellect to to supply arguments in the hope of causing the will to reject some Truth. There are numerous publications, numerous theologians and philosophers priests and prelates out there who will plausibly tell you what you want to hear.
For me self-deception means ignoring that niggling little voice in my ear which is warning me of what I am doing until in the end it becomes too loud to ignore and my conscience has no alternative but to surrender to the truth.
The consciences of others seem to ba able to accommodate error and  conflict with equanimity.
God bless you too.