Pope Shenouda III
Train yourself on personal prayers, beside the ritual ones.
  The prayer in  which you talk openly to  God and reveal all that is in your heart.  There is nothing wrong in  saying to Him, ‘Lord, I love You but I feel  that I love other matters in  the world which hinder me from You.  Whenever I try to remove them from  my heart, I find myself weak before  You. I know that, “Whoever wants  to be a friend of the world makes himself an enemy of God” (Jas  4:4).  Therefore, grant me Lord to love You with the perfect love  and with  Your strength, save me from any love that is against Your  love.’
      
  
   Don’t let  your prayer be just mere chosen  and well selected phrases. Let it be in  plain words that spring from  your heart, without artificiality... Let  your prayer express your  condition and feelings with an open heart...  Beware that you do not  make your prayer just a routine.