St. John of Kronstadt: Be true to God always and in everything...

Be true to God always and in everything. 

If you say the prayer Our Father pronounce each word sincerely, with reverence, fixing your mind and heart upon God alone, not paying attention to anything or anybody around you. 

If you say any other prayer, say it also with all your soul, not with your heart divided, not paying undue attention to anything or anybody.

St. John of Kronstadt