Welcome to SR.
I tend to oversimplify things. But when it comes to drinking, I simply asked myself if the problems that had arisen from drinking (i.e. anxiety, guilt, embarrassment, health issues, etc.) outweighed the temporary pleasure that I was getting from the alcohol buzz. And even though I REALLY enjoyed the buzz, in the end, the question was a no-brainer. It was time to quit.
If you weigh the pros and cons and, like the rest of us, decide that you need to quit, then it simply becomes a matter of digging in your heels, reaching for whatever support you need, and getting the job done. So far, I have found all of the support that I need from the good people here at SR.
Good luck. I hope you will post often and let us know how you are doing.