16 Rejoice always, 17 pray continually, 18 give thanks in all circumstances; for this is God’s will for you in Christ Jesus.
I Thessalonians chapter five. One of the earliest documents in the New Testament, universally thought to have been written by Paul (unlike the letters to Timothy, Titus and Philemon which are disputed) it prefigures the power of positive thinking, and with “pray continually”, being in the moment.
More positive thinking from Paul in Philippians 4:8:
Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable–if anything is excellent or praiseworthy–think about such things.
Love divine, all loves excelling,
Joy of heaven to earth come down;
Fix in us thy humble dwelling;
All thy faithful mercies crown!
Jesus, Thou art all compassion,
Pure unbounded love Thou art;
Visit us with Thy salvation;
Enter every trembling heart.
Finish, then, Thy new creation;
Pure and spotless let us be.
Let us see Thy great salvation
Perfectly restored in Thee;
Changed from glory into glory,
Till in heaven we take our place,
Till we cast our crowns before Thee,
Lost in wonder, love, and praise.
-Charles Wesley, from “Hymns for Those that Seek and Those That Have Redemption in the Blood of Jesus Christ”, 1747. Christians say that every baptised person has something of God in them, and Quakers believe that of Everyone. In my meeting, we sang this recently because the tune is so good, though some demurred over that last verse. Quakers are not particularly interested in afterlife- but then I interpret the hymn to mean that Charles Wesley was also writing of the new creation, here on Earth. As was St Paul in Gal 5 22-23:
the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, gentleness and self-control.
Experiencing and creating Heaven, here.