Leaders can get so insulated from learning by only focusing on their own team, their own company, or their own industry. One of the smartest thing a leader with heart, mind, and soul can so is to look outside.
Outside the walls of their company's conference room, outside the realms of their target market, and outside the boundaries of their industry, territory, competitive set, or customer base.
What can you learn about customer service from a local coffee shop? What can you learn about data from an airline? What can you learn about product development from something you saw at a big box retailer? There's no telling what you can find if you're willing to look beyond the small world you've created for yourself.
Increase your horizon and increase your learning.
(h/t: Hunter Walk's piece about A+ people)