Just think back to a recent uncomfortable conversation you had with someone -- a friend, family member or total stranger. Things were going well until the other person just laid it all out there: an unnecessary peek into his or her financial situation, sex life or health problems. No matter what you do, your view of an oversharer is forever changed.
If you haven't suffered through one of these conversations, your time will come ... or you are a walking diary.
Painful chitchat on a train is one thing, but workplace TMI（Too Much Information） is its own monster. At work, oversharing can damage your reputation, make your co-workers avoid you in the hallway and even damage your career.
Here are 13 things you shouldn't share while on the clock:
1. medical history: Hospitals and human resources departments are prohibited by law from giving out your medical information for a reason. People have a tendency to adjust their behavior when they find out you have, or had, a medical condition. They might treat you like a sick child or make you an outcast.
2. Confidential work information: Hey, did you hear who's getting fired? You -- because you couldn't keep private information to yourself.
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3. Plans to quit: When you're hunting for a new job, don't let co-workers know. Loose lips or devious motives can mean your secret search finds its way to the boss.
Possible outcomes: you're let go before you're ready or you're quietly pushed out, which is what happened to Ron Doyle. He mentioned to some co-workers that he and his wife were deciding if one of them needed to quit. Doyle was just thinking aloud and had no intention of turning in his resignation letter quite yet.
"Within 48 hours, I noticed the meetings through the office window -- every administrator present except one -- me," he says. "Communication on critical issues came to a halt and the separation was palpable."
When he eventually quit, everyone was surprised. He explained how ostracized he felt, but they insisted that they had no idea they were acting that way toward him. "Never tell them you might leave -- subconsciously or otherwise, they'll act as if you already have."
4. Online venting sites: If you use your social networking profile or a blog to release frustration about your personal and work life, don't send your co-workers a link. You'll have to clean up your digital dirt (even more than it already should be) and censor yourself from now on.
5. Matters of the heart: Soap operas are fun to watch on TV, but they're not fun to live. Your reputation will suffer if you come into the office in tears one day because you broke up with your significant other and then you dance down the hall the next week because you met the love of your life. Your love life isn't as interesting to anyone else as it is to you, and people may be unable to separate your romantic life from your professional one.