When we pray, we should be praying from a place of rejoicing because we need to know that in every situation we have peace and we have God. And He takes care of all of our needs.
4 Rejoice in the Lord always. I will say it again: Rejoice! 5 Let your gentleness be evident to all. The Lord is near. 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.
Acts 20:31, 36-38
31 So be on your guard! Remember that for three years I never stopped warning each of you night and day with tears.
36 When Paul had finished speaking, he knelt down with all of them and prayed. 37 They all wept as they embraced him and kissed him. 38 What grieved them most was his statement that they would never see his face again. Then they accompanied him to the ship.
“Paul’s relationship with these believers is a beautiful example of Christian fellowship. He had cared for them and loved them, even cried over their needs. They responded with love and care for him and sorrow over his leaving. They had prayed together and comforted one another. Like Paul, you can build strong relationships with other Christians by sharing, caring, sorrowing, rejoicing, and praying with them. You will gather others around you only by giving yourself away to them.” (Life Application Study Bible 1857)
Life Application Study Bible. Zondervan, 2011. p. 1857.