I do like my hard liquor. I never thought I had a problem, so I've stopped a couple of times for a week just to demonstrate that I'm still in control.
Really, the toughest part is the habit. I never got the sense that I was dependent on the feeling of drinking, but that it was just something that wound down the day and set me up for sleep (although I found myself sleeping better when I had NOT had a drink before bedtime). When I stop, I find I do mentally miss it for the first couple of days. It doesn't change my mood or cause other changes, but I have to remind myself to fill the time before bed with something besides a drink.
Everyone's different, and only a professional counselor would be qualified to offer advice. However, my initial thoughts are whether or not you've taken the step of ensuring you don't have any more booze in the house. I've had to shed several bad habits (namely eating junk food) before, and I find the first most easily taken step is just to make sure it isn't around. It's easier to stay disciplined if it requires more steps than going to the cupboard.
If you find you won't voluntarily get rid of it to help your discipline, that might be something you'd want to question.
There's no reason for me to assume you're of the same mindset as me. If your personality is changing when you don't drink, or you're drinking when you have other obligations (your initial post seems to indicate this is NOT the case), then other steps might be necessary. In the meantime, I'm glad you shared. Start today. Get rid of the stuff, and see if you can not drink tonight. Then, don't buy a bottle tomorrow, and see how tomorrow goes. After that, you've got a pattern. Give it a week, then 30 days.
People are different. You might want to just be a "never again" person, and there's no shame or pressure with that. Several friends were in that situation, and that's just how they live because it's simple and straightforward. Conversely, you might be a "it was a bad habit, but now it's a sometimes thing". If you're trying, you're improving.