The renewed mind worries not about the things of the past. He lives in  the fullness of the present to embrace a better future. The kingdom of heaven is to be replicated in this world in order to receive in totality Christ's heavenly commodity for humanity.

 "Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is, His good, pleasing and perfect will".
Romans 12:2 (NIV)