What I found true for me was that I had to be ready to quit drinking before I could actually do it. Really ready, not just feeling morning-after remorse.
They say in AA that you have to hit rock bottom before you will try to pull yourself up. I doubt that is literally true for everyone, but it was for me. They also say that rock bottom is defined by each individual.
I had the college degrees, great job, loving marriage, etc. etc. I still have most of that. For me rock bottom was losing my marriage. The moment I realized that this time she wasn't coming back, I had no problem quitting and have had no desire since to start drinking again. I knew then that I really had to make a serious change in my life or else the pain would be repeated. I had to do it for me, out of love for myself.
Congratulations on the 48 hours and good luck!