Never let the bitch win. Never. To remain undefeated, always pay attention to the battle at hand. If you think in terms that you are quit forever and you will feel like shit forever, it just became harder and damn near impossible to beat.
You will have phases while your body rewires without nicotine. Fog, funks, uphoria and joy, and down right depression and rage. Every emotion will be heightened for a time.
You know what, you can survive and win today. Today is the day to say, "Not now, not today". Day after day, you will train yourself not to be impulsive and value freedom over vice.
Just never sweat what lies in store tomorrow. I can promise you, what you feel today is only temporary (good or bad) but you can suffer or enjoy today and get through it.
Wake tomorrow and repeat. Day after day after day. Before long, good days will far out number the bad days and quitting daily...It gets easy.
Stay the course by following the plan. Quit today, never worry about being quit tomorrow or forever. Just quit today, keep your word and claim a victory. When you wake and its Today again...repeat.
Be a fighter and value your quit and freedom more than you value a buzz and kneeling to swear allegiance to nicotine.
If it ever gets to a point where you have to have one. You must call and ask a brother for permission to cave. (This keeps you from an impulsive decision that brings regret.)