1. Don't tell people your plans. They may sabotage them. 2. Don't tell people your weaknesses. They may use them against you. 3. Don't tell people your failures. They may see you as a failure, and you may lose opportunities. 4. Don't tell people your next big move. Just move forward, and shock them with your big results. 5. Don't tell people your sacred secrets. Everything sacred should be kept personal. 6. Don't tell people about your finances. It isn't their business to know. 7. Don't tell people highly sensitive details about your intimate life. You never know what can go wrong.