And how often do you turn them on?
I have 2. One on the ceiling and one lamp on the floor (amongst dreadful clutter). I rarely have the lamp on but I've got it turned on now (with the ceiling light off) and it romantises the mood of the room a lot.
It's funny how the smallest things can do wonders for your mood. Is there anything in the house you've discovered that's lifted your mood up recently? I'm in a funny, sensitive mood and could do with some tips e.g. air freshener/whatever, for feeling soothed.