That is the only way you will conquer this addiction. You must embrace the journey for the new you to come to the fore. One of the things I like about that quote is the "seemingly secure" part. Security is a feeling of safety. The familiar is what makes us feel safe. Stepping out of our comfort zones (that "familiar") naturally makes us feel uncomfortable. Change is simply that unfamiliar period of time until we adapt and discover our new comfort zone. When you've quit long enough you feel just as secure as you did when you smoked.