As a Christian, why should I let life’s trivial problems get to me? I am a visitor to this place for my home is not here but in heaven. Why worry about something that the lord has control over?

Philippians 4:6-7
New International Version (NIV)
6 Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. 7 And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.