If anyone is in Christ, he is a new creation

2 Corinthians 5:17
Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new.

Being in Christ means a new creation. This is what it means to be born again but more because we are meant to leave the old ways behind. Being a new person means we are no longer doing the same things or being tempted by the same things. This is difficult for some because we are living in the same world with the same circumstances. However the change is suppose to come from the inside, with the Holy Spirit.