I've heard 'write what you know' a lot.
I can't follow that.
Mainly because I don't know a lot. My romance experience is probably the equivalent of most middle-schoolers, I've been tipsy (but never drunk), rarely break the rules, and, quite honestly, never met a dragon.
That's not stopping me from writing a story where a dragon is the MC.
See, I think the most important thing to write is what we can imagine. It's a given for SF/F authors, but even for literary fiction and YA it's important. We have to imagine what our characters would think and say, imagine what locations look like, imagine plots.
Our imagination is the foundation of our writing.
Throw in a bit of true life, makes things relatable, but come back to that magical world of make-believe.
Today's tongues twister: