How to deal with my alcohol problem

Hi, I've been able to diminsh my intake with alcohol significantly. taking better steps. However when I get drunk i make really bad choices. Like twice I have kissed people outside my relationship. I hate that I make these decisions while black out drunk. These moments dont happen often but every couple of weeks I will get black-out drunk. How do I stop drinking to prevent those moments. Do I need to stop completely for a while or stop forever.