Some painkillers for my heart, please Doctor?

Closing a chapter in the book called Life is sometimes so hard.
I wonder how long it'll take before the wounds heal this time.
Your words cut like freshly sharpened knives through the heart.
The Sandman seemed to have forgotten me in the last months. I lay in bed many a night, eyes tired from the tears, my mind fatigued by the thousands of thoughts running as if caught on a broken treadmill, but sleep eludes me.
I used to think I was stronger than this.
I need to rebuild the wall around the fragile heart, before it bleeds out.