Hello,
recently, I realized there are couple of things I can't live without. Coffee, for example: if I didn't have one (two, three..) a day, I feel even physically sick! Or my habit to stretch my whole body before I go to bed: I can't fall asleep without it.
I hesitate whether as well count my bad habit to turn on the laptop before I even open my eyes here, because 'lack of computers' make me feel physically better (no head+neck ache ;-) you know).

I'm pretty sure everyone is addicted to something, may it be a chemical substance, food, thing, person, habit or whatever. What are you addicted on?