Who you surround yourself with directly affects every outcome in your life.
"There's only one proper basis for choosing friends and that is mutuality of values. Most people exercise no discrimination in terms of thought or values in defining any relationship that they might be involved in or about to be involved in, whether it be the choice of a boss, a friend, a lover, associates at work, whatever. That which guides me is my rational self-interest, and the only reasonable way -- the only rational way -- in the realm of friends, to make a choice is through mutuality of values. How could I possibly share anything if we didn't share the same values?"
- Mike Mentzer