Have you ever addicted to anything? Such as listening, reading, and exercise?

Every morning I say hello to my classmates and asked one of my classmates how long he slept last night. These days he is called "Listening King". He is addicted to listening to English news and usually stays up at night. Actually his listening ability improved a lot. He motivated my class to study harder.
For me I 've been addicted to watching TV , meeting friends and drinking for a while. But in this training center I'd like to be addicted to studying. If I can be hung up on something with a goal, I will be changed.