My post is not targeting any particular person, but when someone becomes saved, then the scripture says that person is a new creature. The old sin nature is still there, but there is a new nature that wants to please the Lord. The Holy Spirit now resides in that person, and that person cannot remain exactly the same as before salvation. A Christian can certainly fall into sin just like an unbeliever, but he/she will not be able to stay satisfied and happy in a lifestyle of sin as the Holy Spirit will not let that person be satisfied staying in it.
If someone likes to steal, and then gets saved, then the new nature will not allow that person to be able to continue stealing and feel just fine doing it any longer. That does not mean that the person cannot steal, but will no longer enjoy it and will not want to keep doing it over and over without feeling conviction about it. The same goes for someone who has a habit of telling lies or commits fornication or whatever the sinful habit is.
Someone who is forgiven by the Lord (saved) will not feel good about going right back and CONTINUING in the old lifestyle and having an attitude of it doesn't matter since I was forgiven and can't help it.
Christians still sin, but cannot have pleasure for very long in purposely displeasing the Lord and grieving Him.