I found this on 99U in a piece called How to Make Time for New Hobbies but it boils down to reading and it boils down to that advice coming from a book. There is something meta about a book telling you to read, but I like it. The book is called The Obstacle Is the Way and the author is Ryan Holiday.
Said author says:
Where do you get the time to eat three meals a day? How do you have time to do all that sleeping? How do you manage to spend all those hours with your kids or wife or a girlfriend or boyfriend? You don’t get that time anywhere, do you? You just make it because it’s really important. It’s a non-negotiable part of your life.
…Perhaps the reason you having trouble is you forgot the purpose of reading. It’s not just for fun. Human beings have been recording their knowledge in book form for more than 5,000 years. That means that whatever you’re working on right now, whatever problem you’re struggling with, is probably addressed in some book somewhere by someone a lot smarter than you.
That is a direct quote from the book except that I got it indirectly: this is the same passage that 99U cites. Go read what they say about it in the full piece, would you?