That is what I usually do, I may play the guitar for an hour or so and take a break and on and on the cycle goes. Yet I honestly wish I would be capable of playing for, say about four hours per day. I enjoy the guitar but I lack the time I would prefer for it. I'm currently in my senior year and have A LOT of work to do with some AP classes, therefore I get less and less time to play. I may find myself playing the guitar while I watch tv, just to maintain some level of proficiency. And it may get even worse, in august I'll be going off to college; hopefully I'll get some breaks and find a good band to jam with during my stay. Hence, my recommendation is, play the guitar now! I made my mistake when I decided to take french lessons instead of music about five years ago, and now repent from that desicion...