I am terrible at resting!
In theory, I know that true rest in life is found thrugh meditation in the presence of the Lord. STepping away from the world. This should be what our hearts long for, and I think it anticipates the eternal rest that we will one day enjoy.
I'm thinking of how in the troubles (or may we say, the business) of life, this is what David longed for: "One thing have I asked of the Lord... that I may dwell in the house of the Lord all the days of my life, to gaze upon the beauty of the Lord..." Psalm 27:4, ESV
And also the Sons of Korah: "My soul thirsts for God, for the living God. When shall I come and appear before God?" Psalm 42:2, ESV
Real rest is found through satisfaction in the Lord himself.
In practice, however, I often replace this true rest of the soul with the more menial things of earth. I have a need to constantly be "doing" stuff and I lack the incentive to stop and enjoy real rest.