All successful investors read a lot. It's a common denominator you'll find among most smart people. Charlie Munger once said, "In my whole life, I have known no wise people who didn't read all the time – none, zero."
But all good ideas can be taken too far. Reading is one of them.
Reading is powerful because it opens your mind up to new ideas you hadn't thought of before. We're all a little malleable in that way. But this can be equally dangerous if you're reading nonsense, bull, drivel, gossip, or other stuff that opens your mind up in ways you'll eventually regret. There's an important difference between "reading lots of stuff from a variety of fields" and "reading every word in front of my eyes."
Every reader needs a filter
What topics don't pass your filter?