How does our work on this earth transfer into the new earth when God returns?

I recently read _Every Good Endeavor_ by Tim Keller and also _Surprised by Hope_ by N.T. Wright. Both are amazing books, focused on the resurrection theology that God will raise up a new heaven and a new earth, and we will dwell in the presence of God, not just sitting around, but living life with new redeemed bodies and doing redeemed work that isn't corrupted by sin. The ideas of heaven are very exciting: that we won't be just sitting around playing harps, but will live much like we do currently, although without the corruption of sin and in the presence of God. Another exciting theme in these books is that the work we do here matters towards the new heaven and new earth, and will be redeemed and made full when God comes. While this is exciting to me, it is also very confusing. Can anybody shed some light into how the work we do here transfers to Gods kingdom, according to Keller and/or Wright, even if it is "secular" in nature?