There has to be more time for that to kick in. I hold to my guns about the power of the mind. Your mind is stronger than your body will ever be. The trick is learning to harness that power and channel it into your running. There are tons of runners using meditation techniques of some kind to achieve that power.
Psychological aspects play a huge role in competing.
The rest is in your melon. Here is my suggestion for a solution. If you want to be a natural runner, try stepping outside in the yard and eat some dirt. Hell, a good percentage of the Ireland s rural population still uses peat to warm their homes. It does not matter if you snack on mud or juggle chainsaws.