When a person exercises, the blood gets moving, the muscles get moving and this increases one's sense of well-being. There's a long period from January to March with no major holidays. A fun idea is to celebrate unusual holidays. Have a party on Groundhog Day or Mardi Gras. If you have a fun event to look forward to, winter won't seem so long.
People have a tendency to shut themselves in their houses after the sun goes down.
This only increases the feelings of boredom. Schedule some events after 5. It can cure boredom and make time fly. Some people neglect to make their houses places that are comfortable and soothing. Sundermeier suggested decorating with pleasing colors, adding plants and filling the house with pleasing smells.