Got sober 4 years ago, being a present dad is the best reward

Won't get into all the details but I was a mess. Drinking every night, missing days with my son, lying to everyone. Hit rock bottom hard. Been sober since my son was 3, he's 7 now. The memories I have of those first years are basically gone and that haunts me. But the last 4 years? Those are mine. I'm present, I remember everything, I can be the father he deserves. Still struggle with guilt about the lost time but I'm grateful every single day that he's given me a second chance. This version of me is so much better than who I was.