Hi and welcome.
Alcohol is "cunning, baffling and powerful" and it will do anything and everything to trick us back into drinking again. It's very patient too. It will wait years for its opportunity.
Fact - alcoholism is a progressive disease, even when you are abstinant. It you go back to drinking in a short time you will be far worse off than than when you quit.
People who stay sober for a long time usually have a program of recovery to keep them sober. AA works for a lot of people. Regular meetings and hearing the stories of newcomers talk about what their last drunk was like while it is still fresh in the mind reminds the person with years of sobriety how bad it really was. You see, alcohol will trick you into believing that it was not that bad.
Do you work a program?