I can't weigh in regarding dull, cold rainy weather and getting impatient with conditions like that is totally understandable, but I'm wondering too because I've had the creative shut down feeling here in Southern California, my issue being boring clear skies every day, all day, all year! I pray for some atmospherics to make things interesting, but I think you see where this is going. I just don't know of anything more challenging than Photography and its built in creative methodology of thinking. Photography has taught me more about myself and life than practically anything. When I get into a creative slump, I've learned not to think if it that way, I just re label it a creative pause, recharging the batteries of thought and invention. Since going out somewhere looking for a picture isn't the right approach, as we know the best approach is being at a state of allowing the picture to come to us, I'm OK with creative pause. It works! Although it works a little different with different people, it's a formula that has some merit.