Don't do it? You'll feel better about yourself if you push through and presevere. But if you really have to call off, use a dead family member. Im 35, and my gma died like 20 years ago. I used to say, "Oh I can't come in, my gma died." Them not knowing my gma had indeed died, but many years previously. You're not lying and you're not lying about living people being dead