First, congrats on having enough self awareness to know you need to stop. Next, I was a huge liar when I was younger (up until I was about 16); however I didn’t have the wherewithal to realize it was hurting my relation ships and myself. At least not until the day I realized I had repeated one lie so many times that I had actually formed a false memory of said lie. Thankfully one of my friends who was with me that day knew the real story and called me out on it, but I had 2 fully formed memories of the event in my head because of the lies.
Now I only lie to be polite