There are many variations to this idea of what it a lie and what is true. Phrase such as ‘fake it until you make it’ or perfectionism for example. It is one of the foundation of marketing and if someone (a company in their marketing, a politician, or a psychologist) lie for long enough then sometimes that lie becomes a true.
Like a boy that his parents are telling him that his painting are brilliant, making the boy believe that, and wishing to get more compliments, investing more time until finally he becomes a true painter.
In my professional life as well as the private, I’ve seen this transaction of lie-to-truth and vice versa over and over.
Overtime the boundaries of truth and lies are not clear and all we can do is to be aware and not to judge too quickly.