Know the cost of what you plan to do, Jesus says, or you will look like a fool.
To translate into running, know what your goal is, and then see if you can manage to achieve it (else choose another goal). From two thousand years ago, we see that people have always needed to manage their strengths, skills and resources to reach their goals. This means that if we set ourselves goals in running, it would be wise to know if they can be accomplished - and we need to be reasonable in the execution of these plans. I have approach my goal setting not in terms of my own ability, but in terms of what I see around me from others. Perhaps I need to look more at settings goals based on my abilities. This is an interesting change to my current point of view!
Took a 20 km (12+ mile) ride to the waterfront to watch the Toronto International Air Show today. We saw some specs in the distance from Colonel Samuel Smith Park - saw the B-25, F-16, F-18 and some old Torpedo Bombers from WW II, but on the way there we also found the interesting sign above. It's like only a few minutes from my home. Quite an interesting piece of History! Below is the view from the park (with a smoke trail from one of the acrobatics teams).