Revolved Half Moon

Lord knows my body needs this pose.  But I truly despise it.  It has been a "quest" for me for a while now.  I have decided to do it everyday.  And in one month I see a difference!  I'm uber proud of myself.  Doing what you "hate" teaches you something.  Tolerance.  Discipline.  This pose causes me some pain on the outside of the hip of the front leg.  It's past discomfort.  I'd call it pain.  So I am VERY careful.  Give this pose a shot.  Use a block.   Somedays I can reach the ground, other days, it's just not happening.  And that's ok.  Be kind to yourself.  Remember that hurting your body in yoga asana is just going to set your progress back.  Weeks, possibly months.  So I take it pretty easy in my yoga asana practice.  I've hurt myself many times over the years.  That's how I found yoga to begin with.  
Take a look at Ray Long's fabulous info on this pose.  

www.dailybandha.com/2014/05/anatomic-sequencing-revolved-half-moon.html