Controlled Forgiveness

Think about these things:

 To the degree that you do not forgive, you give an equivalent
 measure of control of your life to the offender for which you
 receive torment and bondage.

 To the degree that you do forgive, you give an equivalent
 measure of surrender of your life to the Lord for which you
 receive joy and freedom.
  

And when you stand praying, if you hold anything against anyone,
  forgive him, so that your Father in heaven may forgive you your
  sins." (Mark 11:25-26 NIV)