Caffeine and sugar dont really effect me, except in high doses (2 red bulls will do it, and once i had a huge meal with three cokes and i felt AMAZING with no anxiety, but thats another story). Anyway, all last year I used to drink a cup of coffee in the morning. Theres something really satisfying about a cup of coffee and any sort of cake or pastry. The thing was, sometimes i would skip a weekend and not have any coffee, but i wouldnt feel any withdraw symptoms even after having a cup a day for weeks before. I noticed that i seemed a little bit more nervous when i had caffeine (or maybe i just convinced myself of this) so i stopped drinking it. Just stopped. I dont see how i didnt develop and addiction, but thats just what i did.