Abraham Kuyper, in his classic book on the Holy Spirit's work, wrote, "There is one great act of God which re-creates the corrupt sinner into a new man, the comprehensive act of regeneration, which contains three parts: quickening, conversion, and sanctification."
Regeneration makes believers spiritually alive in Christ. We were spiritually dead to God, until the Holy Spirit awakened us to new life in Christ. "And you hath he quickened, who were dead in trespasses and sins" (Eph. 2:1). We are made spiritually alive to a personal relationship with God in Christ.
Regeneration enables our conversion to Christ. Conversion has a negative and positive aspect. Negatively, you turn away from your old life through repentance. Positively, you turn to God through faith in the Lord Jesus Christ. The Holy Spirit's work enables you to repent and believe the gospel.
Regeneration sanctifies us, which means to be set apart in Christ. Through conversion, we are set apart to new life in Christ (1 Peter 1:2). Sanctification by the Holy Spirit begins in conversion and is completed in glorification (Romans 8:30; 1 John 3:2). Sanctification is the process of spiritual growth in Christ (2 Peter 3:18).