I am trying so hard to quit smoking....?

My husband & I recently decided to quit smoking together, cold turkey, since that I do believe is the best way for us to quit together. I started smoking 14 years ago & the habit is not only going to kill me, literally if I don't quit, but it has also become insanely expensive. I am giving it my all & yet after only one day of quitting, I feel like all I wanna do is cry or go crazy & hurt myself. I have tried Chantix before as well. I took it for the 12 weeks recommended by my Dr. I was able to quit for the 12 weeks but soon as he took me off of the medication, there I was, feeling crazy again to the point of no return, until I gave in. PLEASE can someone give me some advice? I really do not want to become another statistic. I have been told that it is all psychological, however I disagree with that, I do believe I have a physical addiction, basing from my withdrawal symptoms. So please anything helpful would be great! Thanx.