Its a little bit pessimistic and includes some of those "what ifs"....
something I do if I'm being ridiculous about things is say "even if the worst happens and I do" (whatever) "does it really matter...."
-What does it matter if some strangers see you anxious or panicky?
-What does it matter what those strangers think about anything about you? It doesn't change a thing - what about family - does that really matter????

I used to see people looking at me everywhere, Why are you dressed like that in the shops? How dumb is she? How did she get in to...? What's with your hair? What's with your face? You're so fat you shouldn't be eating/buying that? Why aren't you at work? You are a lazy...... you get the point... really they probably were too busy thinking about their own worries and even if they weren't WHO CARES!!!!!! end rant!