It's a lonely season. Do things that fill your cup!  If you continue to feel sad, alone, and bored, it is time to get up and get at it. Frittering time, calling people and complaining, and waiting by the window for your children to return will only make it worse.  Step out and spend your time without your kids on valuable experiences.  Quality time spent will give you that serotonin boost you need and put you in a better mindset for when they return!