If you struggled with you alcohol use previously there is a good chance you will end up struggling with it again. Once those patterns become ingrained in us it takes years if not decades, and involved very significant lifestyle changes in nearly ever area of one's life, before one is capable of overcoming those deeply ingrained patterns we develop in active addiction.
I find that when I drink (2-4 beers tops), I never had an issue drinking BTW, it ends up leading to three days of feel out of sorts. If you can manage one drink, you likely will be fine. Two drinks and you begin to significantly impair your ability to prevent yourself from stopping there. Basically the more one drinks the less control one has over making a decision to not have another drink. That is just the way it seems to works with drugs generally speaking (perhaps with the exception of entheogens).
If you do decide to drink make it a real ritual and create lots of rules for yourself. For instance, requiring you eat while you have you drink. Not drinking in social settings with people who drink a lot, limiting the numbers of days of the week you drink, not drinking until you have finished your obligations for the day, etc. etc. Create a harm reduction plan for yourself so that you have a metric by which you can easily judge if you drinking is going in a direction of getting out of hand or becoming problematic.
