“I have three boxes on my desk: In, Out, and Too Hard.” ~ Warren Buffett

We’re most likely to succeed in areas we understand deeply, yet we often step outside our competencies. That’s where costly mistakes happen.

Focus on what you know best, and move carefully into areas you don’t yet understand. Be honest with yourself about what belongs in the “too hard” box.

Stay within your circle of competence and expand it gradually where you can.