I can't stop smoking or drinking coffee. I put this hear because I am seeking advice from religious people who have been in recovery for at least one drug addiction. Did you struggle with self hate or feel like you were making God very sad? Anyone is welcome to comment.
Switch to a vape for smoking, the nicotine itself is pretty harmless it's all the other crap in the cigarettes that kill you. If you're a heavy smoker start with 12 mg vape juice and slowly take it down by 2-4 mg over a period of weeks. You'll get the enjoyment without the physical punishment. I was a heavy smoker and was doing 24 mg (extremely high nic), I still use 12 (which is normal), but use that even less frequently now than . The other thing is vape juice can be made, it takes the nic base, a couple of other chemicals you can buy on amazon and about $30 of measuring equipment I probably spend $100 on enough to make for me and my wife for a year.
Essentially, an immediate $3,000 a year in pocket. So, have the enjoyment, less addiction, and save a boatload. There is even zero nic vape juice if you just can't break the "habit" of smoking but don't want the nic. Some people can easily quit the nic, but still enjoy the activity of smoking and that's the kicker in many cases. Vape juice is essentially "fog juice" with flavoring as is completely harmless. Nicotine is technically a poison in concentrations over 1000 mg, but by that definition so is water as over-consuming that would kill you as well.
Coffee? It's harmless, other than disrupting sleep schedules when taken hours before bed. If you don't drink it then, it has no adverse effect on a technical basis.
Anyway, if you're feeling guilty about either there is no need. Guilt is just something used to manipulate people. Figure out why you need to do something and address the problem from that direction. If you need to smoke because it helps you relax or focus it's not terrible, just switch the mechanism by which you receive the nicotine to something not harmful to your health. If you need coffee to stay up because you spend long hours driving an addiction to this is less harmful to your health than an auto accident.