Anxiety
You try not to think about it. You tell yourself that everyone goes through these things. But then you worry. What if something happens, you say to yourself? Can I predict the future? What if I don't get that job or that promotion? What if I say the wrong thing? Do I have the money to make it go away? And what about the next time? And the time after that? What will it be then? Will I have the ace up my sleeve? What will I do when I can't make it go away? Where will I run? Will tomorrow be the day my luck runs out? Will I get hit by a bus, get robbed? Will the kidnapper that abducted and killed someone from just down the street pick me next time? I drive by that place almost every time I go out. Granted, I didn't know those people, but what if I had been there when he came in with a gun? what would I have done? They're both dead now.