Embarrassed welcome. I was like you, I never told a lie for the first thirty years of my life as a JW but I've changed since leaving the JWs. I don't think it's wicked to tell the occasional lie, to prevent hurt feelings, to keep things to yourself when someone is being intrusive or just to make life a little easier.
I think that people who habitually lie are screwing with their own heads. It actually can become a mental illness. A person I worked with used to trump anything I said with something bigger. When my little girl had tonsillitis, her sister had died from it. When I had to have a root canal at the dentist, she had nine done all in one day. When I mentioned it to colleagues they said she makes stuff up like this all the time.
This is an extreme example of course of someone who has a mental health problem but I think that people who habitually lie to others also lie to themselves. They live in denial about all sorts of things they should face up to which messes up their life.
So whereas an occasional lie to smooth relationships is nothing to be embarrassed about I think habitually lying is changing reality in our own heads which stops us facing up to life and making the changes we need to make to be happy.