Why do some people lie over and over again, sometimes even about seemingly inconsequential things? It can be quite frustrating and damaging, both to the recipient of the lies and to the person doing the lying.
A good assessment may be needed first to rule out substance abuse or other compulsive behaviors as well as conditions that impact reality testing that may be causing or contributing to the lying.
When it truly turns out that someone is simply just doing a lot of lying, it may be most helpful to think about it behaviorally rather than making interpretations about what the lying might mean about the person.
Sometimes the lying is instrumental – the person is getting something out of it (real or imagined) like:
Avoiding or delaying conflict or discomfort (such as being punished, having someone angry at you, or having to do something you don’t want to do)
Being able to do something you believe others would object to
Getting someone to do something they wouldn’t otherwise do
Image preservation/enhancement or attention (even negative attention)