The question is evident in plenty of interviews, posed to published authors. It’s a variation on “what would you tell your younger/pre-published self,” or “what advice would you give young’uns,” period.
I posit that the question itself is wrong. An “aspiring” writer is one who never writes but has a yearning to be a writer. Don’t’. Be. That.
We are what we do, truly.
“Be published” in the passive tense, means someone else is publishing your writing. Self-publishing is not an aspiration, because it’s also something that is entirely in the writer’s hands and requires a credit card. Either you do it or you don’t. Don’t aspire; just do, if that’s the way for you.
Back to the title. My not humble enough view is that the most common trap for one who wishes (i.e. aspires) to write is they don’t do it.
Down with aspiration. Onwards with perspiration.