I am told that September 27 is Stop Abuse Day. Since I have stopped abusing tobacco, let me encourage others to do so.
Since I quit on July 4, 2003, Quitnet informs me that I have stayed quit for 1545 days, 21 hours, 35 minutes and 34 seconds !
The website of the Centers for Disease Control and Prevention has a fund of useful information on the dangers of smoking and how to go about stopping the habit.
Their Factsheet is a good place to start.