There is so much peace when we live as God designed us to live. When we trust Him to be God, to take care of all our needs, we have nothing left to stress over. In the absence of stress, our lives are filled with peace like a gentle breeze and a soothing balm.
Take My yoke upon you and learn from Me . . . and you will find rest for your souls. (Mat 11:29) Taking His yoke is to let Him do the heavy lifting. Give Him whatever worries you. He wants to take it because He already has the issue worked out. All you have to do is agree with Him that His way is better. Your stress isn’t fixing anything. Your faith will.
Living in rest takes some amount of work because we have to fight the enemy and resist being seduced into fear. Imagine living the good life where all your needs are met and there was nothing to worry about. Will all your issues go away? No, but when you rest in God, you can sit back and watch Him do what you cannot. It is an attitude adjustment. Same issues, but new revelation on how they will be managed. Why live in stress when you can have rest for your soul?
Anther post on rest: The Mana Of Rest