"I"m a distance runner. I've been trained to keep going, even when it's hard. When it hurts. When it sucks. When I don't want to. I look past it. Relentless forward progress to the finish. Call it what you want; stubbornness, endurance, determination, guts. Deep down, I don't know how to give up. [And it's always worth it in the end]"
- Not sure who wrote this, but I can relate.