[rdiddly]

Other than school, which is sort of an anomaly, I find that the only thing that prepares you to do something is actually doing it. So the corollary is, you're never actually prepared for anything ahead of time. Don't worry about it, just trust yourself to either know or figure out what to do when the time comes. We make the path by walking.

[vaylian]

Plus, OP shouldn't expect that the tasks that they get are always well thought through. In school you get assignments where the teacher already knows that a clear solution exists. In the real world your supervisor might work on flawed assumptions when giving you a task.

Also: The amount of effort needed for a task does not always correlate with the importance of the outcome. Sometimes big wins come easy and sometimes small wins are expensive.