19 years isn't very long but in 19 years you get your fair share of scrapes and bruises. At 19 i'm glad I appreciate pain for what it is because it helps carry me on through life.
They say rainbows only come after rain, but I think that's the wrong way to look at pain. I think when it rains, I have water. The potential to feel pain is the ability to live. When my heart aches after a break up I know I have the ability to love. When my eyes tear to the thought of a loved one leaving, I know I have the ability to care for someone. When I fall off my bike I get up and realize, I can still move.
Pain is not just suffering, but rather a constant reminder that you still have something great in your life. If it hurts, it's there.