Cigarettes and Weed, are they related?

So, I'm going on a week plus without weed. Feels pretty good. But, I haven't yet stopped smoking cigarettes. I think this is also a tough habit, the only bad thing is the I am still coughing like crazy. 

Just like after you take a hit... I know its tough to quit both at the same time. But I'm going to try my best and apply the principles of the guide for cigarettes. 

That said, man, I sure feel more agile and responsive, even my boss noticed I was more aware and attentive at work. Maybe I can get a raise?