Here I am on day 7. I'm having almost no cravings. But most of the day I feel that something is missing. Also irritated, I'm already a short-fused type of person, and quitting pushed me over the edge yesterday. I yelled at a clerk for no "real" reason.
The real problem for me is that I need a lot of focus on my job (I'm a pilot). And it's been very hard to stay focused. I couldn't take any drugs to help me (heard Zyban could help).
How long this difficulty to concentrate will last?
Is it normal to cough some black stuff?