Can you soften your heart?  Does it need a little softening?  Why might it be hardened?  Those walls are self-protective mechanisms, but the heart of you cannot be permanently damaged, cannot be truly broken when you understand flow.  It is your thoughts that hold you prisoner.  You may feel wounded, but wounds heal quite naturally by the grace of God if you let Love do its work.  Soften the heart.  Dissolve.  Melt.  Be love instead of looking for it.  You are That.  All else flows through.