" Mike Tyson said it best. ‘Everyone has a plan until you get punched in the mouth.’ And he’s right. Until you go through a month of everything going wrong, you won’t know whether you have what it takes. You will never learn how to play good poker if you get lucky—it’s as simple as that. You just won’t. "

― Maria Konnikova , The Biggest Bluff: How I Learned to Pay Attention, Master Myself, and Win