Jim Rohn famously said that we are the average of the five people we spend the most time with.This relates to the law of averages, which is the theory that the result of any given situation will be the average of all outcomes.

Salespeople, entrepreneurs and all successful people know that, in order to increase your wins, you've also got to increase your losses.
When it comes to relationships, we are greatly influenced — whether we like it or not — by those closest to us. It affects our way of thinking, our self-esteem, and our decisions. Of course, everyone is their own person, but research has shown that we're more affected by our environment than we think.