I am not going to give any examples because as soon as I do so here in my blog, they will make their way through the grapevine and cause countless more problems. But, for Pete's Sake (whoever Pete is), let me say a couple of things ...
If you work for someone, leave your "self" at the door and concentrate on teamwork and team success. Not individual one-upmanship. You want a place to work? You better be committed to the team and the company.
Today's business environment gets harsher all the time. The top leadership at your business has plenty to worry about without team members causing problems. UNDERSTAND THIS -- we are working hard so that you can have a job and feed your family. You'd not only better be putting your ALL into that today as well but you darned well better not be causing stupid problems that take my mind off of doing my job properly. I work 80-90 hours a week for rather mundane wages. Here's a message -- I do it for YOU folks, not for myself. Everything that most business owners have personally is constantly "on the line" with the bank. We are betting on, and at the mercy of, your hard work and superior performance!
When you're at work, YES, give it your all. That is what you are paid to do. If you don't and you suddenly wake up without a job or without a company to work for, you will have no one to blame but yourself.
When co-workers are not performing to the best of their ability, don't throw up walls between yourselves. Come alongside them, encourage them, support them. In the process, you may just discover that you don't know as much as you think you do!
Okay, I will fall down off my soapbox now. I am praying for a better week.