Possible Clues:

• Unable to email perhaps from where Joyce and Beckett lived? (6'1,5)
• Impediment to creativity ... and each set of puzzle circles
• Austen and Morrison choreograph a play?
• Problem keeping one's sheets unmarked?
• Notepad for one, perhaps, that checks author's progress?
• Author's hangout?
• Plotting problem, perhaps
• King's annoyance
• Let's crib work in novel form -- that's frustrating for author
• Obstacle for an author