Dive into your creative stream
I love, love, LOVE it when I can tell a fic author has integrated their specialized knowledge in a fic. I was reading a fic that at some point included the character going to visit an art therapist, and it's so clear that the author is an art therapist themself, and the details included are just immaculate and I love it. I've previously read about a character doing fencing for no other reason than the author clearly wanting to write a sport they understood. A character being given a hyperfixation on bugs just so the author can infodump themselves.
I eat it up every time, it brings such a smile to my face