My oldest daughter is caught up in the Harry Potter books now. There is a reason, beyond DRM, that I haven't downloaded them to my iPad.
As it is, my youngest, is always wanting it to play games, and my wife is always wanting it to look up a recipe or browse Facebook.
Good luck getting it back, I just focus on the small time slice between when they go to bed and I do. Of course, my kids aren't teens yet, so I still stay up later then them. If you have a teen, I would focus on the large chunk of time between when you get up and they manage to drag themselves out of bed.