It all depends on coffee: if you're sensitive to caffeine, you should give it up. If not,
my psychiatrist doesn't really see the harm in it. You know the article by Ruth Whalen on caffeine sensitivity on the website http://www.Doctoryourself.com

Cigarette smoking is another thing altogether. All one has to do is see a friend
in a hospital room propped up on two pillows taking oxygen and dying because of lung cancer from smoking cigarettes. It happens; and not only that, but it causes emphysema which is a long-term problem long before cancer sets in. I'd quit it now while you still have lungs that function normally.

Try stopping smoking with another person who wants to stop. Use it as a competition thing to see if you can resist smoking longer than the other person can.
Try hard candy when the urge hits to smoke. After about a month, the cravings will no longer hit and you'll be free. It takes about a year to really reach the point that you have no desire to ever smoke again.

It was difficult for me to stop, too, but it's so-oo-o worth it to give up tobacco.

I'm working on giving up grains now, and that's a difficult one, too. Again, hard candy helps reduce cravings.

The problem is that these things are just so addictive and before we know it, we're
right there with the problem staring us in the face. Some people can taper off; I
was not one of them. I had to stop it cold turkey.

Please think about giving up smoking and reducing caffeine intake even if you don't
think you can give that up--do try to reduce your intake--caffeine does a job on
the mental activity, with highs and lows, and cravings for more.