I actually do not subscribe to bad and good luck. The times that I do not catch fish is the days that I did not understand where or what they wanted. Sometimes it is just not possible to get bitten and I went fishing anyway choosing to accept that the weather or conditions would make a skunk very possible. That usually happens when I travel up North to fish where we fish every day regardless. On a "badluck" day look at what the conditions are and change something be it location, bait, timing, or other factor. By looking for the missing piece of the puzzle you increase you chances of catching fish instead of plugging on with a pattern that is not working. A tough day of fishing is an education.
Art