My Human — who has been a writer for some 40+ years — always says that writing is a "practice," and has to be kept up just like meditation, a sport, playing an instrument or anything else. Perhaps more than most areas of creative expression, writing requires "flow." If you let that flow get away from you, it takes more and more effort to reconnect with it, the longer you've let it slip. Which (I think) must be why my Human keeps pecking away at his laptop even when he goes on holiday.
=^..^=