Poker is a game of math. The first thing to remember is if you play too many mediocre hands to fifth street, you will get your comeuppance. Back to the math…the chance of a gut shot or flush draw to beat you is approximately 8% at the river. It’s not that distant a possibility. Being rivered will happen even more often if you play against a table full of calling stations who follow you to the river. Over a period of time, however, you will win; it’s still about the math. Remember, everyone has been rivered and thinks their story is worse than yours.