Im over twice your age, and it took me 40 years of alcohol abuse to get to the point of realizing that I needed to do something....so glad that you are addressing this now at your age!
There are many ways to recovery (AA, Smart Recovery, moderation, etc), you will have to find what works for you. Maybe you could start with a Sober 30...commit to absolutely no drinking for 30 days, no matter what. If 30 is too overwhelming, how about a sober 10 to start?
I have found that every time I do this, it gets easier. In between the sober 30's, I worked on lessening the the amount and frequency of drinking. This has worked for me, actually I am now on day 27 of 30...my birthday was this week and it was not a problem to not drink.
I have created a FB group call Drunken Angel - Inspiration to empower those struggling with addiction. I invite you (and everyone) to join!