Because Gratitude - "Give thanks in all circumstances; for this is God's will for you in Christ Jesus." - 1 Thessalonians 5:18
Faith - "Now faith is confidence in what we hope for and assurance about what we do not see." - Hebrews 11:1
Forgiveness - "For if you forgive other people when they sin against you, your heavenly Father will also forgive you." - Matthew 6:14
Trust - "Trust in the Lord with all your heart and lean not on your own understanding." - Proverbs 3:5