For he who has entered His rest has himself also ceased from his works as God did from His."
Hebrews 4:9-10 (NKJV)
Getting enough rest is important in order to live a healthy life. However, getting enough rest is more than just getting enough sleep at night. Many people today are not at rest, they are not at peace, because of the things they deal with in their own life and what they see happening in the world. If, for example, we are not sure about being successful, if we are concerned that we will not be able to meet our needs, and we are anxious about the future, then we are more stressed than at rest.
In Hebrews 4, it talks about a rest for the people of God, and that we can enter into His rest. When we are trusting God to help us in every area of our life, then we are at rest. If we fully put our faith and confidence in God, and not in ourselves, then we are at rest. If we are relying on God to guide us in the way we need to go and that He will give us direction about how to live our life, then we are at rest. If we are not trusting God for these things and we are working to accomplish these things for ourselves, then we are in a place of stress rather than rest.
Christians talk about trusting God, but often they are full of anxiety and they are stressed. These people spend their time trying to figure out what to do, and they put all their energy and effort into making their own way in life without trusting God to help them. There is a place of rest for God's people, and that place of rest comes by putting our faith in God and trusting Him. If we are living a life of faith and trusting God in every area of our life, then we are at rest and peace, because we are confident in His provision. Don't be stressed, but get into rest by fully trusting God in every area of life.