Horrible colleagues and office politics

Have you ever encountered horrible colleagues who backstab  because they have nothing else to do but gossip and chat to cover up their shortcomings. 
People who always take credit for work they didn't do. Don't you feel that sometimes these kind of people are a worthless wretch. In fact, they don't have ethics at all . I feel bad about these kind of people and take pity on their ignorance and lack of self esteem. I wish people who don't understand another person's work would just keep quiet and stay in the sidelines. When they open their mouth, they only show their undespicable character and illiteracy. Maybe you should just keep your cool and do your job. But they sometimes get in your nerves and simply ruin your day.Politics at work can never be avoided,but you can avoid the "politicians".

• Stay away from colleagues who gossip relentlessly.
• Stay away from colleagues who bad mouth others.
• Keep your distance from two-faced people. (those who are only nice when they need something from you)
• Stay with colleagues who keep conversations at a general matter not involving work.
• Know your friends.

If there are any other suggestions you can give then please comment. Keeping a healthy relationship with your colleagues results in a harmonious atmosphere at work.