You're supposed to be working on the thing. The novel, the series of paintings, the album, the project that has a deadline and a commitment attached to it and people who are expecting it. You know what you should be doing and you're not doing it. You're doing something else instead, something that appeared without being planned, something that doesn't fit into the project or the schedule or the professional narrative of what you're currently working on.

There's a moment that most creative people recognize, the moment when something from outside your usual territory suddenly illuminates something inside it. You read a book from a field you don't usually read and a sentence in it reframes a problem you've been having in your own work. You see an exhibition of a form you don't practice and the way the artist handled a particular challenge suggests a solution to a completely different challenge in a completely different medium.

Ask a child what they're making and the answer is often the most honest thing you'll hear about creative work: I don't know yet. The making and the knowing are simultaneous. The thing reveals itself in the process of being made rather than being made from a predetermined vision of what it should be. The play and the work are the same thing, and the question of whether it's serious doesn't arise because the question isn't relevant.

It starts as something else. A note you were taking while working on the main thing. A piece you made to warm up before the real session began. A tangent you followed because you were curious, with no intention of it going anywhere. A mistake that produced something unexpected. A conversation that you wrote down afterward because you didn't want to lose it.

At some point in most creative lives, you settle into your form. The essay, the novel, the short story, the painting, the song, the photograph. The form that suits you, that you've developed skill in, that feels like home. You know how it works. You know its possibilities and its constraints. You know how to move inside it.

Most creative projects begin with some version of a plan. You have an idea of what you're making, a sense of where it's going, at least a rough outline of the territory you'll cover before you're done. The plan provides direction and containment and the particular comfort of knowing, approximately, what you're doing.