Continuous learning is not all about acquiring new information. It’s also about reflection. We need time to process the information we consume.
Like most things in life, learning requires balance. This includes the number of books we read, at what speed we read them, how many conflicting messages we’re exposing ourselves to in a given time period, etc.
Keep learning, but don’t over-consume. It’s not good for digestion, and the excess calories will slow you down.
P.S. You can’t teach an old dog new tricks, but it’s never too late for a human being. And what you learn about yourself, is more important than anything else you learn.