Imagine having a friend that you tell your worries to. Every. Last. One. And they don't ask for anything in return. And then you go back to that friend and you tell them all of your fears, your troubles, your doubts, your insecurities, your disbelief. And then they wrap their arms around you and hold you and tell you it's going to be ok. And they tell you not to worry about repaying them for listening to you or taking care of you. And that friend tells you they've got it under control, and you do not need to worry any longer.
God is good. He is that person.
"cast all your anxiety on Him because he cares for you." - 1 Peter 5:7