"Cease striving and know that I am God." Psalm 46:10 (NASB)
Or "Be still, and know that I am God." (NKJV)
The Hebrew word that is translated "Cease striving" or "Be still" is 'Raphah.' What a great disposition for us to have toward God. The word means:
to sink down, to sink, drop, to relax, withdraw, idle, to let drop, abandon, refrain, forsake, to let go, to refrain, let alone, to be quiet, to show oneself slack
So chill. :) Relax, give yourself some slack, let go, stop struggling, cease striving, be still, abandon yourself to God... lighten up and know Him.