Running through things because you are familiar with them, breeds routine and this is the seed of boredom.
“I do have a small collection of traditional SF ideas which I've never been able to sell. I'm known as a fantasy writer and neither my agent nor my editors want to risk my brand by jumping genre.”
“Nor is it the least advantage to health, accruing from such a way of life, that it expose those who follow it to fewer temptations to vice, than persons who live in crowded society.”