I don't have much to add to the advice already given by others, except that I have seen how alcoholism has impacted on the lives of a couple of family members/friends, and their families. One family member sadly never recovered, and left behind his young family. Another family member in her 50s/60s managed to turn her life around, and enjoyed the joys of being a grandmother. A close family friend who had been alcohol dependent for as long as I can remember and almost lost his life, finally, in his late 60s managed to give up alcohol with the help and support of doctors, and his family. He's now retired, with new interests. Instead of sitting in a pub all day, or drinking himself into oblivion at home every night, he's now out playing golf, and finally enjoying his life with his wife.
No, it's never too late. You've made the first step by admitting that you have a problem. Now you need to get the help and support that you need. Start with your GP, and take it a step at a time. And, as others have said, get support from someone close to you, who cares about you. I wish you much luck!