Answer:
Dear Uncle,
First of all I just want to say I really care for you and your wellbeing. You matter to me, my family, your family, your friends and so many others. Never forget that
Last week I heard from my parents that you have been diagnosed with many health problems and had a heart attack
this had me extremely worried when I first heard it but i'm glad you're recovering now
your lifestyle isn't really helping with this smoking and drinking can affect you and after a while you might not even have control over yourself and it will slowly ruin your relationships (add some other ways it could affect them)
Now, I know it's hard to remove these habits so fast but with small steps at a time you can do anything
I recommend you taking a small break from your business during that time we can work on this together you can come visit my family every 2-3 days like you usually do but this time CYCLE!! it's actually very enjoyable and keeps you active without putting too much work in
you can try adding more fruits into your diet keep it more balanced avoid drinking too much caffeine or alcohol during this time because it's the same thing that keeps you up at night
lastly remember to listen to your doctor they only want what's best for you
thank you for reading I hope you can understand my concern and try to change
Your lovingly,
Name of yours,