The thing is that we are so consumed by information that sometimes we think that we are enlightened, and we are manipulated instead. So, we have to get a media detox first, and take our time to think: "Is this event/fact/thought even make sense?"
And we have to accept when sometimes we are proven wrong. That's the hardest thing.
Grounding in reality is where it starts, otherwise you don't know whats real to begin with ;)