One of the best parts of running to me is that it creates a tremendous sense of confidence within you. In the beginning, as you are setting new distance records for yourself, it is incredibly inspiring. You start to believe that if you can do this, you can do anything! Then as you progress and work on getting faster, seeing your split fall, you become even more inspired. You realize you are training your brain, as well as your body, to be disciplined, focused and overcome perceived barriers. Essentially, running is a metaphor: If you can achieve goals in running that previously seemed impossible, you will apply that to other areas of your life as well.
In a prior life I spent 14+ years as a DJ, playing in front of thousands of excited club goers, fun loving wedding guests and stuffy corporate types. When I first started training for the Disneyladnd Half-Marathon, I would put together a playlist to help me stay motivated and less bored. However what I found was that I was fiddling with my iPod a lot - skipping songs that either weren't right for how I was feeling or just because I didn't want to listen to the full 4 minutes of a song and then have the lull and my iPod moved to the next song.
I'd love to forget my first half. I had no strategy and was focused on all the wrong things. At the end I hated it, felt like crap, and swore I'd never do another one.
My advice is to have a goal. A very specific, measurable, reasonable goal, and let nothng - injuries, time constraints, fatigue - get in your way. Almost all of the things that hold us back are in our head. Free your mind for what is possible and you will do amazing things.