As hard as it will be, the biggest thing that you need to do is find new friends who will help, not hinder, you in becoming a devote Catholic. Finding other Catholics would be the best situation, but I think as long as they don’t drink, do drugs, and are responsible people, they will help you whether or not they are Catholic. Friends, even those who have our best intentions in their heart, can hold us back from our goals, even if they don’t mean too. Because all they do is drink, it will be difficult to hang out with them and sit there and watch them drink, while you don’t. And often, especially after they had a few, they will poke fun at you for the new lifestyle you want to led.
I was in a similar situation. I didn’t drink that much, but I would smoke pot every day, several times a day. When I finally decided to quit, I realized that I needed to stop hanging around with my friends that still smoked. It was just too tempting to be that close to it and not smoke. Plus, they were having fun smoking (or drinking) and that left me sober and bored. I had much more fun going out with sober friends and doing something with them.
Going to daily mass is wonderful and I was at the best place in my life (spiritually, mentally, and emotionally) when I want every day. Adoration is wonderful, too, and you don’t need to go with anyone. Also, you can go and say the Stations or a rosary in an open church during the day (not during mass).
Getting a job and/or volunteering is also a great way to grow spiritually and keep yourself out of trouble. Reading is another way, or taking a class, learning an instrument, hiking, starting a garden/hobby, working out, etc.
Try going to your church to see what kind of activities are available and it any of them interest you. The internet has many resources for finding different things to do and you may be able to meet some Catholics your age in your area (always be careful about meeting people from the internet - meet in a public place with a parent/friend/relative, and make sure others know where you are going).
Once you start changing your life in these little ways, you will realize (if you haven’t already) that you don’t have much in common with your other friends, other than drinking, and you will not want to hang out with them anymore. It can be tough at first to pull away and you may even feel guilty, but try to remember that God comes before our friends.
God Bless
KB