Wish I Didn't Know This!

50% of teachers quit in their first 3 years!! Really?!?  I would like to know where this statistic came from :)  How depressing!  I don't want to know that the career I'm going into has this kind of statistic.  What makes the teachers that stay teaching and those that quit different?  What characteristics do they have that others do not? Hmm...all I have to say is that I hope I don't add to this statistic!!