It's the thing that leaves you quivering, shaking from head to toe. It's because you know you cannot ever attempt to make something so delicate. You're afraid to reach out, even with one finger, to touch it, in case you shatter the entire fragility of the system. Someone beat you to it; someone else wrote the thing that could break your heart. You wish it had been yours, but you know that you're big and uncouth and bumbling beside the small, intricate, finely balanced piece you're looking at, listening to, feeling in your soul.
Maybe one day you'll find your own fragility and let it shine through to create something beautiful, but right now, you're too afraid. It might break you in half.