I was never able to give up alcohol completely, but reduced the amount and frequency of drinking. I drink coffee but can't drink six of them in a row without r

I was never able to give up alcohol completely, but reduced the amount and frequency of drinking. I drink coffee but can't drink six of them in a row without risking a heart attack, while a sixpack of beers gives me only a mild headache next day. Tried smoking, really tried to catch the habit but they don't do nothing for me. Feel nauseated, also at some point I smoked a packet (20 cigarettes) in a row - never felt so sick in my life. At least with alcohol you throw up and feel better but when stuff's in your lungs what can you do? Maybe if it were legal here as in Canada or California, I'd try weed. But it's not so I'm stuck with alcohol on occasion.