"Keep smiling and Keep Sweet"
  by Lillian Barker Durkee
(with slight revisions as this was written in the early 1900's)

Keep Smiling and keep sweet
        No matter how things seem,
        They are only a dream;
And nightmare's retreat,
        When dawn's the heavenly light
        Upon awakened sight.

Keep smiling bravely through
        Your lonely wilderness,
        For Love is there to bless
Each victory won by you
        O'er self and sin and fears;
        Smiles drive away the tears.

Keep sweet and love-forgive,
        Nor hateful words resent,
        It hastens your ascent
Until you truly live
        Within "the secret place"
        Of holy thoughts and grace.

Keep smiling and keep sweet,
        For smiles and sweetness heal,
        When they God's man reveal
As spiritual, complete.
        Keep sweet from day to day;
        Keep smiling all the way."
      

Found in a Christian Science Journal