LMSH- A busy mind is a sign of intelligence. My mind wanders all over the place while I'm running. I find that listening to music while running helps. However, when I start thinking about all the other things I should be doing, I realize the incredible benefits I'm getting out of exercising. I also think of my time while running as a bit of "me" time before I start the rest of my day. The physical and mental benefits of getting regular exercise are many and worth my spending a few minutes at the start of the day running.
rdy2rn- Speed does NOT matter in the C25k program. Go at whatever speed you can jog while still being able to talk. It doesn't matter if that is 8 min per mile or 18 minutes per mile. The goal is to finish this program without injury. Pushing your body too hard too fast is one thing which takes a lot of beginning runners out. Speed will come in time. After you finish the C25k program, and your distance starts to increase beyond 3 miles, you will find your running pace naturally increases for shorter distances. Also, you can do some speedwork, but not before finishing this program. Allow your body time to adapt to the rigors of running. Then you can worry about increasing your speed.