My exH is also a cronic/complusive liar. We fought about it all the years of our M. He would even lie about trivial [censored] like what he had for lunch or where he got a pair of pants. Takes away all trust whatsoever.
"Success is the sum of small efforts, repeated day in and day out." Robert Collier
"One's best success often comes after their greatest disappointments." Henry Ward Beecher