Cultivate friendships with hopeful people. Surround yourself with friends who think positive, faith-producing thoughts and who contribute to a creative atmosphere. This will keep you stimulated with positive attitudes. Dr. Norman Vincent Peale
I've had jobs where everyone got along well. 
We were friends and we were extremely productive. I've had jobs were no love was lost, and every day was tense. It's the same in families. It's the same in sports. Negative thinkers can ruin everything.
People who don't like each other generally don't play well together. It doesn't matter if you're watching children play softball or watching the World Cup. The best teams play together as a team, they are practiced, they know what to do with and without the ball. They cheer each other on. They are positive. They communicate, they work – together. And, while they might not always like each other, they get along well enough to get the job done.
