There are two fundamental skills/mindsets that together give rise to self-bootstrapping ability:
1) An openness to the idea that the world is not single-dimensional and black and white, but multidimensional and shades of gray.
Surprising information is a signal that there might be a shade of gray or a whole dimension you were previously missing.
2) When you encounter surprising information, you don't lean back and say, with disappointment, "that's interesting..." but rather lean in and with active curiosity say "Oh, that's interesting!"
The combination gives you self-accelerating momentum to have a nuanced understanding of any problem domain (wisdom), without a ceiling.
The more wisdom you've earned in the past, the more likely you have a lens or tool from previous problems to apply to new problems, meaning the value of this power compounds.
Things like knowledge management tools and workflows can significantly accelerate this compounding loop.
These two skills are very, very hard to teach or get someone to develop from outside. It has to come from intrinsic motivation.
These two skills are also somewhat contextual; you might be "burned out" in one context but still have energy in another.