From the Bible:
"Do not be anxious about anything, but in everything, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus"
(Philippians 4: 6-7)
"Love is patient, love is kind. It does not envy, it does not boast, it is not proud. It is not rude, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. Love does not delight in evil but rejoices with the truth. It always protects, always trusts, always hopes, always perseveres. Love never fails."
(1 Corinthians 13: 4-8)
"And we know that God causes everything to work together for the good of those who love God and are called according to his purpose for them."
(Romans 8:28)