Continue down the righteous path! We have all been there. A day soon turns into a week, month, and then years.
Some people will never change, and those people shouldn't be in your life. It sounds like you're in realization of that, and taking the proper steps to look out for number one, which is yourself.
Continue to be a positive influence around others who struggle around you. You have the chance to not only change yourself, but to show others that sobriety IS possible, and that a life through sobriety is a heck of a lot more rewarding than the many days wasted on alcohol.
Keep up the good work!