I honestly believe the mind is far more powerful than we give it credit. You will find evidence of whatever you choose to believe.
Always take the approach what you're doing is good for you, and really know it, not just think it!
I honestly believe you'll be much more likely to call forward good health if you believe what you are doing is good for you! And I believe if you spend your time worrying about you're health and wondering if you should stop you'll be more likely to invite sickness into your life.
So heck yeah dude, cigars are good for you.