Get out of a rut by trying something you've never done before!  If you're usual routine is going to work, then coming home and watching TV till you go to sleep, try going to a museum or a movie on your way home.  Maybe you've been itching to go bunjee jumping, or take a trip to another country, make 2008 the year you GO FOR IT! 

Keep it simple - make a goal to do just one new thing, and after you do it - take note of how you FEEL.  Are you inspired, and motivated to do something else?  Are you scared?  Are you uncomfortable?  Once you get in touch with these feelings, they'll help guide you to discovering a new direction for yourself!