I have been on Chantix for w weeks. I can not sleep, have started smoking again and am VERY VERY VERY DEPRESSED. I can not relax, crying all the time. I thought it was the withdrawal from cigarettes, so I smoked one. Apparently that is not it. I am still just as depressed. I have a history of depression anyway. Other than going off the Chantix- which I plan to do, any ideas?