Hope

Colossians 1:5-7 NASB
5 because of the hope laid up for you in heaven, of which you previously heard in the word of truth, the gospel 6 which has come to you, just as in all the world also it is constantly bearing fruit and increasing, even as it has been doing in you also since the day you heard of it and understood the grace of God in truth; 7 just as you learned it from Epaphras, our beloved fellow bond- servant, who is a faithful servant of Christ on our behalf,

More than wishful thinking, this hope is an expectation confirmed by the resurrection. In verse 5 we see that the thing hoped for is in fact done and awaits us in heaven.
Further, the fruit of the Spirit bears witness to His presence and sealing in the kingdom of God which results.
The gospel is the grace in truth of God Who is true.
Its work continues in us and through us, reclaiming and renewing, and it continues to grow until He comes again.