The Bible is filled with so many occasions where God command his people to leave behind a world of sin, Lot was told to leave the city of Sodom and Gomorrah, the children of Israel was commanded to leave the idol worship city of Egypt, and many more, the new testament is filled with God's hands in meeting people's in a miraculous way with Saul topping the list, Jesus called his disciples from different walks of life to walk with him, they all left there vocations and followed Christ.
The Christian walk is not complete if a new convert hasn't yet burned the bridge behind him, his walk isn't complete if he hadn't say a complete 'NO' to the world of sin, his NO should also be affirmative.
The place of a counselor is also very important in the life of a new convert, if there is no mentor, counselor or follow up it will be easy for the new convert to go back into his vomit, it is a known fact at how the children of Israel went back to there idol worship by creating a golden calf due to the absence of there leader :Moses.
Ruth said No to his false religion when she said "Thy people shall be my people and thy God my God. Ruth 1:18
People who are scared of the unknown never gets to reap God's abundant blessings, this simple affirmation by Ruth puts her in the lineage of Christ.
You can also be uplifted in a divine way like Ruth if God is the major factor that influence your decision.
Won't you rather leave the past behind no matter how shiny it is?
Won't you rather take the narrow way?