I just drank 1/4 bottle whiskey, ate a donner kebab and smoked 2 cigarettes and now..

my lungs feel like they're on fire. Should I be worried? I seemed to be doing this a lot lately. But everytime I try to eat healthy and do an exercise regime people keep telling me to "get a life" and they all love to drink, smoke and/or eat fast food. I don't like it because it makes me feel crappy, also I seem to get fatter much quicker than most people. I try to do what's in my best interest so why do people insult me for it? But i'm worried now because i've started to cough a lot more than I used to, am getting quite doughy and honestly think I might be becoming pre-diabetic. I've been smoking for over 1 year and been drinking quite heavily for about 4. I'm wondering whether the damage from this lifestyle is permanent.

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