Welcome to SR, Shih. I've found this site really helpful.
I know I've felt the temptation to minimize or even romanticize my past drinking. One thing I've done is to write down some of the worst stuff that occurred in my life—the bad nights as well as the cumulative toll they took on my life.
I think reading the early posts of others also helps remind me why I quit. And the later posts—the ones where they share how great their lives have become without alcohol—are a real inspiration to me.