There is a lot of lying in Al-Anon. [You can't say that! Oh, but I can.] I used to lie as well and still catch myself in exaggerations, oversimplifications, and outright distortions.
Here's an example:
"My [alcoholic / alanonic / addict] parents weren't there; they weren't available."
It is possible, if the individual was brought up by someone other than their parents, that their parents were not there. But perhaps in almost every single case where someone says that the parents were not 'there', they were emphatically 'there'. They were in the room. There. They might have been gone more than other people. But that's a different question. It may be true to say they were gone a lot; they were out a lot; etc. But there they were. Similarly with they weren't available: just as implausible. I bet that the parent in question (as did mine) did pay the person attention quite a lot, including feeding, clothing, the meeting of all sorts of needs. I might complain I did not like the attention, or I wanted more or less or different attention, but that's a different question.
It's fascinating how casually we in Al-Anon (before learning to tell the truth) will lie about our childhoods and then nod sympathetically at other people's lying.
The programme really is a programme of rigorous honesty. That means learning to say things that are true. This starts in the mind. I have to start by examining whether the narratives I repeat to myself are true. And here's the kicker: every single narrative is exaggerated, distorted, and woefully short of an accurate reflection of the reality the narrative seeks to describe.