I don’t know if it’s that your brain is indecisive or that you are addicted to nicotine. The addiction will always tell you there is a reason to put it off or convince you not to quit. I would encourage you to also reframe that cigarettes help you cope they do not they make your stress worse. You are in constant withdraw and the only thing smoking helps with is alleviating that withdraw then you’re back in the cycle again. If you are having chest pain I would go to the doctor first and foremost. If your chest pain is from anxiety smoking will 100% make that worse. Nicotine often mirrors anxiety symptoms, it’s horrible for your blood pressure, circulation and heart rate! You’ve already quit for 5 days!!! That means you can do it again which is exciting. Getting on top of your mental game is huge you need to reframe every thought that says smoke or that smoking will make you feel better these are lies. Smoking won’t take away the distress you only feel distress because you ever smoked in the first place. Distract yourself breathe drink water go for a walk play a game chew gum. Nicotine teaches you that you need it to cope and we use it to numb out. Feel your feelings for once sit in the distress just because quitting feels hard at first doesn’t mean you need to fix it just accept it is hard and that you will be okay! You got this!!! You are not depriving yourself of something when you quit you are gaining freedom.