Your ruling Water element makes you very in touch with your emotional side. You may cry easily, and feel the pain of the world on a much larger scale than other signs. That's your blessing and your curse.
The downside of your emotional nature is that you can spend a little too much if you're feeling sad, or frustrated, or even exuberant. You just may not notice that the money is gone until after it's history.
Making a pact with yourself to not shop while hungry, tired, angry or wired (any extreme emotion) can help stave off buyer's remorse, too.