Me. And PBS.
I have no self-discipline at all and I get bored easily. I can't practice scales. It has to be a tune I like a lot, or I won't persist in working at it. If something becomes a grind, I stop doing it and switch to something more pleasurable.
PBS? Yep, if I'm playing and an interesting show comes on the tv, it's almost always on Public Broadcasting and I just have to watch, so I stop playing.