A useful skill is to figure out who is the expert to trust in which domains.

Then when faced with a problem in a given domain, you can simply ask, "What would Dimitri do?"

The more trusted experts you know, the more domains you can have an effective oracle for.

You can induct who an expert is by careful study of who other successful experts defer to on what topics.

A kind of elo rating sorting.

If you are observant enough, you can derive a highly nuanced and high quality intuition about who to trust for what.

To do this requires:

1) Lots of time and patience.

2) The ability to pick up on subtle social cues.

3) The ability to discern where the edges of different types of expertise lie.