Hanging out with negative people. Negative thinking is one of the most contagious diseases around. If youspend time with negative people, sooner or later you'll be thinking negative thoughts. To support their own weaknesses, people often gravitate toward similar people. You can fill in the blank with the addictive behavior of your choice.
Every lemming thinks that about all the other lemmings as they head for the cliff.
I put friends in quotes because the severe way some negative people criticize the positive movement of those around them I would hardly call friendly. I mean finding new ones, not changing the thinking of the ones you have. If they want to change their thinking, they will. Give them a copy of this book. If they're ready, they'll act on it.