Smoking can do that, but it's expensive and stinks and you can get bladder cancer in addition to all the other stuff you kow about. There's better ways to handle stress and anxiety. In the last few months, I've read that in the US, smokers are mostly poor--wealthier people just don't smoke. ( I ain't rich, but I don't wanna look poor) And smokers are less likely to be educated. (I'm not a rocket scientist, but I really don't wanna look dumb) If you pay attention for a couple of weeks, I think you'll see that the poor / uneducated thing is true.