I still keep sinning and sinning. repented. BUT I still smoke and drink.
After we are saved, believe, repent, baptized in JESUS name to get rid of our sins and JESUS has filled us with the Holy GHost. Acts 2:38, John 3:5.
Does not make you perfect, after you have been reborn JESUS will help you and give you the power to overcome sin.
After we are saved and we sin, all we need to do is repent and confess those sins to JESUS and HE will forgive us. John 8:8-10
If you don't really want to stop it's going to take longer, you really have to want to stop that give GOD the glory.
I've seen people quick like snapping a finger and never deiser to smoke or drink again, others a lot longer like me.
Since HE knows your heart HE knows when your going to stop as the rest of us, so it's between you and HIM.
Once save always saved is a trick from Satan so you don't grow in JESUS, Satan what's people to keep all the sins so we can join him. Go back to your same life style and your still good.
Yep a lot of people don't agree with HIS word on how to be reborn or agree that you can lose your salivation.
So look at HIS word to see, don't listen to men.
Matthew 24:13
King James Version
13 But he that shall endure unto the end, the same shall be saved.
Matthew 12:50
King James Version
50 For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Matthew 7:21-23
King James Version
21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Since your asking, I think you want to quit so just do it.
GOD BLESS YOU in your walk.
I will add, when you quite DON'T start again, it may be harder the next time.