Nicodemus asked Jesus, "How can an old man go back into his mother’s womb and be born again?” (John 3: 4 NLT).
Jesus explained, "Humans can reproduce only human life, but the Holy Spirit gives birth to spiritual life. . . Just as you can hear the wind but can’t tell where it comes from or where it is going, so you can’t explain how people are born of the Spirit.” (Verses 6,8 NLT).
If you're waiting to see yourself or someone else actually being born again, you wouldn't see it. However, just like we can see the effect of the wind, we would see evidence of a new spiritual birth when an individual repents from a life of sin, and accepts Jesus as the Lord of his or her life. Being born again means that the individual becomes a new person, thinking and and acting differently [Godly or Christ-like] than he or she did before.