Many Democrats are in a reflective mood. They lost the White House this year [2016], which would not matter as much as it does, except they also failed to take back the Senate, remain out of power in the House and are out of power in most states.
Often, feelings of sadness, uneasiness, and loneliness are vague and unattached to specific events. This makes it more challenging to find ways to turn you mood around. When you find yourself in a funk, focus on what you're feeling.