This God is the one who calls to us, who calls us to greener pastures, still waters, and life to the fullest (Psalm 23, John 10:10). Yet as He calls, He also gives us the choice to respond.
When we choose not to obey, the consequences are significant; we do not enter into His rest (v. 11).
When we are busy, stressed, not at peace, perhaps this is the reason; we have not obeyed God's call, we have hardened our hearts, and we are choosing not to rest in Him and His goodness.
Is there a place in your life where everything seems chaotic, crazy, needing rest? Stop and listen for your Shepherd's voice, so that He may lead you to rest, sustenance (Him), and life to the fullest.