Sometimes you may need to run for five hours in order to cross into the threshold of contentedness. Other days, perhaps one hour will do it. And on yet other days, no amount of running will do it, but you won't likely know that until you get out there and check in with your senses, your thoughts, your environment. Your. Environment.
"We do not see things as they are.
We see them as we are."
- The Talmud