You know, someone asked me very early on "so... you just trust people to report their #GoTheDist numbers accurately?"
Of course I do.
(1) I'm a very trusting person (and I try to surround myself with trustworthy people); and
(2) I'm not the one they're screwing if they artificially inflate their numbers.
Same goes for food logging -- who do you screw if you over/under report your calorie intake? It's not me. It's not your doctor, your trainer, or your dietitian. It's YOU.
But trust me when I tell you this: it's okay if you don't have the best workout or eat a little too much. Pay attention to the trends. Pay attention to how you feel. And then LEARN. Put it in the context of "when I do ______________, I feel _____________."
When I run 5 miles, I feel awesome.
When I eat over my calorie target, I feel guilty when it's junk food.
When I look at the day as a whole, I feel confident that I can do better tomorrow.
This is how you go the distance-- small little steps and mental adjustments that add up piece by piece.