Don't sweat the small stuff ...
"If you had £86,400 in your hand and someone stole £10 from you, would you be upset and throw the remaining amount £86,390 away at the person who took your £10? No, of course not. The same way we have 86,400 seconds each day. Don't let someone's negative 10 seconds ruin the remaining 86,390 seconds of your day."
Positive attitude rocks!