It is normal to feel that way in early sobriety. I felt the same way and found out most people made most of the same mistakes as I did when I was drinking. Having a Sponsor to talk to was very helpful for me. I didn't believe that alcoholism was a disease at first but there are specific physiological differences in our bodies. We they say "We have lost the power of choice in drink" that is no joke. Most of us are pretty dang nice people when we are sober. I worked the steps and they have really helped with those feelings inside.
Be proud of yourself 78 days today is awesome.