Walking

I spend a fair amount of my day walking a job site where I inspect and document repairs and improvements to a street in uptown New Orleans. Generally there are three crews concentrating on their particular tasks, and I quietly observe. I get to spend most of my day inside my own head, while putting one foot in front of the other. It's occurred to me that physically walking across Spain may be the easiest part. Can I keep focused on the goal? Will it be enough to get me on the trail to hoof out another 5 to 6 hours in the heat of the summer? Will I be able to control the dialogue inside my head? I'm so anxious to start and learn more about me...