This is going to be less conventional than you might have expected, but I think a good skill to learn would be lucid dreaming, as the practice of lucid dreaming involves a great deal of evaluating one’s surroundings and looking for unusual elements and inconsistencies.
Unfortunately, I can’t teach this method in a useful/consistent way at present (though that might change soon), but I think it’s an option worth considering.
This is going to be less conventional than you might have expected, but I think a good skill to learn would be lucid dreaming, as the practice of lucid dreaming involves a great deal of evaluating one’s surroundings and looking for unusual elements and inconsistencies.
Unfortunately, I can’t teach this method in a useful/consistent way at present (though that might change soon), but I think it’s an option worth considering.