Largely this is a class thing - writers tend to be cosseted little middle-class kiddies who think that the world owes them a royalty cheque. But just doing it - being in your room for years on end locked in your head alone with invented ghosts - it weakens and softens the body. And I know I can't just live in my head.
Do not fear lest you should meditate too much upon Him and speak of Him in an unworthy way providing you are led by faith. Do not fear lest you should entertain false opinions of Him so long as they are in conformity with the notion of the infinitely perfect Being.