A lot of people try to SECRETLY quit drinking alcohol, keeping their decision "in the closet" because they fear they might not succeed. And if they DO fail, they'd rather it be a private matter, without the embarrassment of anyone else noticing.
However, keeping this life-changing decision to yourself can actually cause you to eventually fail, as you're adopting the mental approach that you are more worried about the potential ridicule of others than you are in permanently removing alcohol from your life.
Fortunately, there is a remedy to this, and that is to tell EVERYONE (when asked) exactly why you no longer drink alcohol. A statement such as "I stopped drinking because I wanted to be healthier and have more money", or one similar, reinforces your commitment to YOURSELF, and also makes you psychologically stronger to resist any future temptation to drink. You are, in effect, telling yourself that your commitment to stop drinking alcohol is STRONGER than any fear of failure.Do NOT be afraid to tell others that you've decided to move beyond drinking alcohol, and tell them the reasons why: you want to feel healthier ... you want to have more energy ... you want to save your money ... you want to do more with your life, etc, etc.
Whatever the reason(s), and there are many, get in the habit of stating them for others to hear - and also for YOU to hear, because by doing so you are constantly reinforcing your inner resolve. It is MUCH easier to stop drinking alcohol when you are FEELING the commitment to quitting deep down in your being. 