A series of unfortunate events

Several unfortunate events have happened to me lately. My car has been acting up, costing me $200 in unexpected repairs. My favorite pants ripped. I have an ugly strain of grass growing in my newly seeded lawn. Surprisingly, these problems are not stressing me out. What is making me anxious are all the "silly" things I worry could happen. I clearly can handle the present, so why should I worry about the future?