I see fasting as a reset button. Even your taste buds will reset and any food will taste much better after a 72h fast or longer. Same happens with sugar. After staying out of sugar for over one month or longer everything will taste much sweeter than before you quit.
Cole prohibits drinking caffeine so, yes, it can directly help you with your caffeine addiction! It will come with withdrawals though. I quit it for 30 days and found myself still wanting it, so it is stronger than i thought. i had horrible stomach aches and the runs after a huge amount of coffee and well, i see why its damaging.