To enter into God's rest, we must renounce our own efforts and sweat. Faith alone admits us into this perfect rest: "For we which have believed do enter into rest" (Hebrews 4:3). Simply put, we are to set our hearts to believe that God is faithful to deliver us in every circumstance, no matter how impossible it may seem.
"For he that is entered into his rest, he also hath ceased from his own works, as God did from his" (Hebrews 4:10). When we are at rest in Christ, we no longer try to put on a brave face in times of trouble. We don't pump up some phony acceptance of our crisis. And we don't worry that we might cave in to fear and begin questioning God's love. In short, our "works mentality" has ceased to drive us. Now we've learned simply to trust the Lord.
How do we develop such trust? We seek the Lord in prayer, meditate on His Word, and walk in obedience. You may object, "But those things are all works." I disagree. They are all acts of faith. As we observe these disciplines, we are trusting that the Holy Spirit is at work in us, building up a reservoir of strength for our time of need. We may not feel God's strengthening going on inside us, or feel His power being built up in us. But when our next trial comes, these heavenly resources will become manifest in us.
This is the foremost reason I seek the Lord diligently—fasting, praying, studying, looking to obey His commandments through the power of the Holy Ghost. It's not because I'm a minister who wants to set an example. I do these things because I know I still have many trials ahead of me. As long as I'm serving the Lord, the devil will never give me rest. I'm going to face intense warfare, surprise attacks. And, in spite of all the victories and peace I have already experienced, I'll always need heaven's resources to help me endure.