These people easily having a far worse day than you

Two Brothers Won The Lottery On The Same Day
 Reminders of long term problems: This is one of the most popular causes of bad days. If you have a long term problem that you didn't solve then at any point of time a reminder of this problem can ruin your day. When i talked earlier about mood swings i said that they happen when something reminds you of an already existing problem that you aren't trying to solve.