I would find myself lying just out of habit! I didn't even need to tell a lie and I would. My personality definitely changed. I think the negative aspects became accentuated and the good aspects became buried. I completely lost myself and felt completely adrift. I became anxious and stressed. I would blame others for my problems, or worse simply torture them because bad things were happening to me (which were really caused by my drinking). I was completely unable to make decisions or discern what things were important or not. I became an incessant complainer, nothing was ever good enough. Many parts of my old self are coming back fairly quickly, while others will take some time and still others are permanently changed because that happens in life. Luckily, the worst things go the fastest for me (telling lies, blaming others, complaining...).
I am learning to simply accept myself as is, do some self analysis, and work on things one day at a time.