He advised that if you do make a mistake, you should have a plan to correct it. If the mistake is big, get help.
"It's always recommended that if something happens like that, and it's too big to handle, that's when you should bring in your boss," Raz said.
Some people may be tempted to say nothing, but that can be dangerous, he added.
"If you tell the truth, you don't have to worry about what truth you've told," Raz said.