2 Corinthians 5:1

For We know that if the earthly tent (our physical body) which is our house is torn down (through death), we have a building from God, a house not made with hands, eternal in the heavens. For indeed in this house we groan, longing to be clothed with our (immortal, eternal) celestial dwelling.

We will live two lives! One here on earth and because we are born again, one in heaven. We are to live our lives here with a purpose, fulfilling the plan of God and drawing closer to Him. As we build our relationship with God here, it will reflect in our rewards in heaven. The knowledge of the Word and our growth with God will sustain us until then.