What is a healthy attitude and consumption of alcoholic drinks?

I have been a over drinking for around say 4 years may be more but not a full blown alcoholic in the physical sense.
I had a discussion in with my wife about drinking sensibly and next week I am going without a drink to see how I really feel about drinking physically and phychologically.
I do not want to stop drinking as in teetotal as that to me is extreme and I enjoy a beer and a wine and would not deny myself the pleasure. But I do not want to drink where it is unhealthy but have a healthy sustainable enjoyment that maybe be beneficial..
I am 38, 6′ 2″ and weigh 220 lbs.
Some advice would be nice that I could use and give me food for thought as I develop my practice and attitude to a more healthier way of life.