I went from regular drunk to completely sober when I found out my wife was pregnant in late 2010. Was pretty easy for me since I did tons of embarrassing shit while intoxicated and always had terrible hangovers, and plus it was only fair that I stop drinking if she had to. Since July last year when our daughter came I can count the amount of times I've consumed alcohol on one hand. I don't have the craving/urge for it anymore, and I'm determined to never get drunk again.