My on the other hand has been playing for about 10 years and can never find enough time to practice. I goto college then work come home and play. I think it is treible to have a set amout of hours. That is like forceing yoursellf to play. I don't have TV, and not much homework. I usually practice until I got something I wanted to do down, put the guitar aside and eat or clean the dishes (whatever) then grab the guitar and start playing. I probably pick up my guitar about 50 times during the day. It just sits there on the floor in the middle of the living room (all 5 guitars). It is like a friend.
go practice all day, not hard to make you one daily list of what to practice if you want.
some wish they could practice but they aren't really guitarists. That is the difference between a guitar player, I can play the guitar, and a guitarist