I'll never be a Beatle, but it does feel validating that I can at least attempt to write music in exactly the same way they did, even if the results won't be quite as good.
To me, choosing what not to do when you have ideas pouring out all the time is vital.
I think it can help for avoiding creator's block (more commonly known as "writer's block," but I'm being more general here).
It's easy to avoid getting started because you don't think you have a good enough idea yet. But when the thinking gets long, try just diving in and making something. Now you have something to react to, and you can often quickly identify things you don't like about it.
Then you think of ways to avoid these things you don't like, and dive back in to make the next something. Gradually you fill in the negative space, and after enough iterations are left with something good.
When an opportunity in life comes into view, I always focus on what could be a negative result. My friends say that's pessimism, I say it's trying to avoid some types of potential reality. It has served me well for the most part.