Everything from B to Z

Something's missing in the puzzle of life. I'm living without something, I just know. I must tell you, my confusion is rife. I'm stumped. I've hunted high. I've hunted low. Should I try to discern my inner soul? Is there some key to find or discover, Eluding my quest for perception, whole - Confounding my struggles to uncover? Would this key empower me to express Every truth which resides deep in my core? I'm told I'm progressing. Nevertheless, Every door I open yields one more door. I've looked through everything from B to Z - I'll quit to munch fruit Eve pulled from the tree.