Good Behavior

8. Reading Over Someone's Shoulder

That invades their privacy! Putting yourself in that person's shoes could help you quash your curiosity, says Lindner. Imagine how you'd react to someone looking over your shoulder. Now picture that person calling you out in a room full of people. That kind of embarrassment will most likely push you to want to stop this behavior. If it's not enough, sign up for a free habit-changing site, like HabitForge.com, which emails you daily to see how you're doing.

9. Talking Loudly on Your Cell Phone

Consider what might happen if your conversation leaked to the wrong person or got posted on Facebook or Twitter. Would you lose a big client or a close relationship? When you're in public, you have no idea who might be listening or where bits and pieces of your conversation might end up. To remind yourself to take or make calls privately, write a trigger word or phrase on your smartphone in a place you'd see all the time, says Lindner. His word is "Mario Lopez," one of his biggest clients.