n encouraging quotation from Jürgen Moltmann:

"Time is determined by what happens in it. ‘For everything there is a season’ (Ecclesiastes 3.1). Theologically, time is determined by the presence or absence of God — that is to say, by the different modes of his presence in time. There is a ‘time of the law,’ there is a ‘time of the gospel,’ there is a ‘time of the Messiah’ and there is a time of ‘the sabbath of the Lord’; and there is a ‘time of eternity.’ …

Theologically, we distinguish between ‘the kingdom of nature,’ in which God is present as the creator and preserver of his creation, ‘the kingdom of grace,’ in which God is present in Israel through his covenant and in the church through Christ, and ‘the kingdom of glory,’ in which God himself will indwell his creation as in his temple. For the Christian faith, the present is shaped by the presence of Christ in the life-giving Spirit. Faith therefore expects a future of Christ in the resurrection from the dead and in ‘the giving life to our mortal bodies’ (Romans 8.11)."

— Jürgen Moltmann, The Coming of God: Christian Eschatology (trans. Margaret Kohl; London: SCM, 1996), 200.

That seems to me eminently sensible and God-glorifying. Let us by all means define not only our lives, but even time itself, in relation to the Creator!

Jesus will return to his people, not when a certain number of years have passed, but when his purposes for this time have been fulfilled.