The colour blue, not my emotions about this specific day of the week. I have never felt the Monday blues that many people talk about. Everytime I notice that I start blaming things on a specific day, month, season, weather condition etc I try to do something to break the pattern. There's not much we can change around us, but the way of thinking we for sure can do something about. It does definitely not work for me all the time, but it's important to keep in mind.