Traveling by car through a gap in the mountains is an interesting experience weather-wise. Sometimes it's sunny on one side and raining on the other, or raining and snowing, or windy and calm. It's the same day and only a matter of distance, but one side is sometimes as different from the other as night is different from the day.
And maybe that's the only thing that separates our moods as well... from dark to light and sun to rain... perhaps it's all just a matter of traveling the distance on whatever road we're on.
If I just keep going when I am feeling dark and cloudy, I am likely to hit a patch of sunlight before too long.