13 Things Mentally Strong People Don't Do: Take Back Your Power, Embrace Change, Face Your Fears, and Train Your Brain for Happiness and Success

by Amy Morin

You don’t have to be demanding or rude, but instead, remain respectful and polite. Express your feelings and stick to the facts. Use “I” statements, such as “I’m frustrated that you’re always thirty minutes late,” instead of “You’re never on time.”