PAIFers -- I need some advice

lily_721

I found a work-at-home position (yes, at my company -- I swear I am destined to stay here forever).  I have all the qualifications.  I'm not really sure about the job description (I have to look into this more).  The requirements of the job fit what I want.  My vaca will be reinstated (I lost my paid time off when I went commission only).  While the pay will be a bit decreased, it will be consistent and less stressful.

How do I justify wanting this position?  Other than vacation time, decreased commute, decreased stress -- because this is all about me. 

AND....  I accepted a new territory three months ago after heavy negotiations.  I thought I would be happier in a new area.  I'm not.  I don't want to do this job anymore.  I need to tell my boss and appear to not be an absolute flake to everyone. 

The new position is an analysis position.  I have the background for this and have been really missing this piece over the past few months.