In a recent article from Inc. magazine, the author shares advice from Warren Buffett on self-improvement. One of Buffett’s mantras is “Go to bed a little smarter each day.” Comparing it to compound interest, Buffett says that is how knowledge builds up.

In the article, the author says, “Buffett knows that the mind is the most powerful weapon to succeed in business. To continuously grow yours as Buffett does his, choose to live your life exercising your mind first!” The article goes on to describe four ways of growing your mind:

1. Read like crazy. Buffett is a voracious reader and typically spends 80 percent of his day reading.
2. Create margin to “just sit and think.” Rather than working harder or trying to accomplish a long to-do list, taking time to think allows us to prioritize and make the important decisions well.
3. Invest in your development. Buffett is quoted as saying, “The most important investment you can make is in yourself.”
4. Surround yourself with the right people. From personal experience, Buffet learned that “it pays to hang around with people better that you are because you will float upward.”

The article is a short read with a little more detail on each of these four points.