“Forget talent. If you have it, fine. Use it. If you don’t have it, it doesn’t matter. As habit is more dependable than inspiration, continued learning is more dependable than talent.”
Back around the beginning of the year, I shared a quote from Butler that’s quite similar to this one, but instead of talent, that previous quote focused on inspiration. The reason they sound so similar is that they’re both are taken from the same essay on writing advice: Furor Scribendi.
The essay was initially published in L. Ron Hubbard Presents Writers of the Future, Volume IX but luckily you can find a reprinting of in her collection Bloodchild: And Other Stories which I’d recommend for the titular story alone.