Is there a reason to substitute the Seven Sorrows chaplet for the Rosary?  I've been saying both the five-decade rosary and the Seven Sorrows chaplet daily for a couple of years.  I pray the Seven Sorrows specifically for my enemies at the suggestion of a priest.  It started with praying for me enemies daily for seven days as penance, which, given the sins confessed was entirely appropriate.  I asked if I could pray the Seven Sorrows for this intention and he told me that I could.  I've since continued to pray the Seven Sorrows daily for this intention.  I truly think my hatred for certain people has greatly abated over the past two years and I have more pity for them than hatred.