This question bothered me a lot when I had just accepted Jesus Christ as my Lord and Savior. I had so many questions and read a lot on the internet and watched YouTube videos to find answers to my questions.
What I noticed was that as my faith grew, sin became more and more disgusting to me. I think that if you love your sin, and your sins cause you to turn away from Christ that you could be on shaky ground.
But when you truly love Jesus, you'll hate sin. It is impossible to stop sinning and we all know that. That was why Jesus lived a life of no sin, and became sin on the cross.
God recognized how impossible it is to live a life of no sin. Sin can not be in Gods presence, and that's why Jesus died on the cross. Because he loves us so much he wants us to come to heaven. But because he truly loves us, he doesn't want to force himself on us.
That would be slavery. That was why the possibility to know good and evil was there in the first place. Of course, God wanted Adam and Eve to love and trust him with all their hearts. So much did he love them, and so much does he love us!
He will not force himself on us, but when we come to Jesus like criminals caught in the act, he will welcome us with open arms!
Everybody struggles, but I believe being born again results in a change of attitude and this is why the Bible says you must be born again.
There are many opinions on the sinners prayer. Personally, I don't think it means much if all you do is pray that prayer just with the intention to have your sins covered, and then you go on living in sin and delighting in it. Nothing changes, so you're not born again. It's just a lie.
I believe being born again means completely surrendering yourself to Jesus. This means letting go of all pride, and acknowledging that you are a filthy sinner. Not just with words, but from the bottom of your heart.
God can see right through you. He knows if you struggle with sin or if you sin willfully.
Many of us struggle with sin, and some sins are recurring struggles. But when we pray, we are given strength and growth to be able to resist. God wants us to keep trying. If that means to fall flat on our faces, so be it.
If there is a sin we can never get rid of, but really try, and despise that sin, God will have mercy.