“Rejoice in the Lord always: and again I say, Rejoice.” (Philippians 4:4 AKJV)
Get your joy from Jesus and it cannot be taken away because He never changes.
“Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known to God. And the peace of God, which passes all understanding, shall keep your hearts and minds through Christ Jesus.” (Philippians 4:6-7 AKJV)
Do you want peace? Follow the teaching above.