“A merry heart maketh a cheerful countenance: But by sorrow of the heart the spirit is broken.”
‭‭Proverbs‬ ‭15‬:‭13‬

Here is a simpler rendering of the main verse:
“A glad heart makes a cheerful face, but by sorrow of heart the spirit is crushed” ESV
No wonder we are given salient instructions to ensure that we are always cheerful and never distraught, he tells us:
“My brethren, count it all joy when ye fall into divers temptations;” ‭‭James‬ ‭1‬:‭2‬
And also:
“Don’t worry about anything…” Philippians‬ ‭4‬:‭6‬ ‭HCSB‬‬
And not just that, in the kingdom we were born into and we express to the world, one of its three features is joy in the Holy Ghost!
“for the kingdom of God is… righteousness, and peace, and joy in the Holy Ghost.” Romans‬ ‭14‬:‭17‬ ‭‬‬
Jesus said in John 10:10 that satan comes to steal, kill and destroy; never let him steal your joy! Give him no place. Ephesians 4:27.

Bible Reading Plan: Isahiah 43 and 1 chronicles 27