I found Allen Carrs Easyway to quit smoking really made it easy/er. I am back on the nicotine now with vaping and a little smoking but...I had success for months at a time using this method.
It truly is a good tool for those intent on smoking.
500+ reviews at 5 stars .Amazon.com: The Easy Way to Stop Smoking: Join the Millions Who Have Become Non-Smokers Using Allen Carr's Easyway Method (0749725586160): Allen Carr: Books
It made it easy to quit but I just don't stay quit on nicotine. I have had 4+ years success with alcohol.