I tried to read up on habitual/compulsive/pathological lying and how to stop it, but it's hard to find anything. Here's what I've gleaned so far:

1. You have to stop lying to yourself. I assume that's the hard part!
2. Find a therapist you're really comfortable with and make a commitment to not lie to them. I think it would be easier to say "I'm never going to lie to this one person" than to try to quit lying cold turkey.
3. If you lie out of anxiety, antianxiety medication can help.

How to Stop Compulsive Lying

https://www.psychologytoday.com/blog...e-and-how-stop