I'm so fortunate in that I've never had another job to pay a bill but acting, since the day I got out of high school.
One of the great perks of being an actor is you're only as smart as the job you're in, you know, and you're only as informed as the job you're in, and you do become an expert, and you read all the books, but then there's a part of, like, you move on.
It happens a lot, but I also think of it as not so much like being abandoned by a director 'cause they're worried about a technical aspect, but I think actually that's my job.