It's good the blokes are having this discussion.
Every one IS totally different.
My Granddad was one of those guys who simply couldn't have even one drink or have any booze in the house. He had put my Dad and Aunties through Hell and driven my Grandma to an early grave. He would go for upwards of six months on the wagon and he was great. Putting ships in bottles and promising to show me the ropes. When he got on the piss he would vanish for a month / six weeks and be paraletic or unconsious. I have known a few blokes like that. Everyone is different. If you decide to cut down your drinking and find it isn't as easy as you expected dont fuck around - GET HELP!! See you Doctor or go to AA. A lot of employers have Helplines for the workers and they will help and they know their shit.
The piss killed Grandpa before he taught me to tie a Turk's Head and he wasn't even 60.
Stay Safe !!