You want true peace, very simple

[Dave M]

True peace does not come from believing in God, it comes from focusing on God !

Isaiah 26:3
You keep him in perfect peace whose mind is stayed on you, because he trusts in you.

James 2:1919 You believe that there is one God. Good! Even the demons believe that—and shudder.

 

[B-A-C]

Php 4:8; Finally, brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things.
Php 4:9; The things you have learned and received and heard and seen in me, practice these things, and the God of peace will be with you.