We are only truly happy when we walk in total integrity, walking in the light of God's word. The paths of God lead us to pleasant places. Walking face to face with God brings fulness of joy. When he whispers to us in the night, revelation floods our soul and we overflow with joy. Happiness is the hallmark of a person living close to God.
God is always close to us and he is always available. Happiness is to experience his wrap-around-presence every moment. Then our heart and soul will explode with joy and be overshadowed by his glory.
Happiness in the heart and overflowing joy are the gift to those who keep the ways of God, those who seek him as their heart's passion.