I like how Ken Wilber puts it (the consequence of practicing awareness): "hurts more, bothers you less." As someone else here mentioned, the dentist is a great place to practice mindfulness and surrender to pain.

The key distinction seems to be between "pain" (the first dart) and suffering (the second, which is created by resisting the first). The Buddha defined enlightenment as "the end of suffering" (not the end of pain). The pain is still there, and you feel it more keenly than ever -- but it doesn't bother you.