Second Guessing

Once my husband excepted this assignment I have been second guessing ever since.  I have to give up all that I know and I know that sounds like a cope out.  Everyone says "congrats" or you are so lucky.  I was just starting to like where I live and now I have to start all over again.  Sure it is a great opportunity.  Sure it will be a good experience.  But aren't I allowed to question if this is the right thing?  I will miss my family and my dog and my friends.  Alright enough complaining for now.  Tomorrow is another day.