We're all operating using human brains. It simply isn't safe to assume we don't lie or decieve ourselves constantly. The failure to notice self-deceptions is, I expect, one of the most pervasive forms of akrasia, if not, obviously, one of the most self-evident ones.

I doubt focused honesty or even radical honesty will have a major effect on the frequency of self-deception. It seems too much like sympathetic magic. So I expect it to work like any other placebo ritual.

I expect combating self-deception will require working against the akrasia directly. But most anti-akrasia approaches asume at least a small window of consciousness of the akrasia, which in this case is often not possible.