Dave Eggers—who turned 48 last week—once gave a fantastic description of writing fiction:

It feels like driving a car in a clown suit. You’re going somewhere, but you’re in costume, and you’re not really fooling anybody. You’re the guy in costume, and everybody’s supposed to forget that and go along with you.

The best advice in such a situation feels like it has to be: Go with it. Suit up, fool everybody, and plow through until it feels feels absolutely normal.