Ever find yourself painting with one particular color all the time? Always have a favorite go to color that you use way to often? A certain color that is in all of your paintings? An over used color?
Perhaps it is time to switch it up a bit! If you paint with watercolors fresh from the tube, take that tube of paint out of your regular stash. Move it from your paint box, your drawer, wherever you normally keep it and set it somewhere out of the way. If you paint with your colors dried in your palette cover that well with a few swatches of masking tape. This way if the color is out of reach or hidden, you will not be tempted to use it.
Encourage yourself to try new color combinations. Explore the other colors in your palette.