Well being the same age as you I decided to quit at Xmas... 3 failed attempts on my own but last week went to doctor and had LFT, got Thiamine and MV and some Chlordiazepoxide and after drinking 12-15 beers per day (and what ever else I could get my hands on) for almost 10 years my LFT came back Good/Satisfactory (a lot of drinkers are afraid to visit for all the aches and pains you get in your abdomen by drinking but are mostly caused by gas and excess acid- but the liver is a strong and amazing healer) so that gave me to boost to now to stick it out - I can live the rest of my days without worrying my liver will explode. Right now I feel great but I still have that niggling "one won't hurt" in the back of my mind but I just keep imagining how much better I will feel next week
... day 8 now so good luck and stay strong
SH