to find myself a job that I really enjoy and can be passionate about and not just a job to pay the bills

For the last few years I seem to have just gone through the motions of doing my job without much joy or motivation.  I have always thought of doing something drastically different and find my passion but I have just been too scared.  I'm still scared.  I am drawn to the things that people here talk about - environment, community, health, etc..  Perhaps I will find my passion in these fields.