Hello DGreatMan,
It is the Holy Ghost in you that you would  even ask such a question, so be encourged.
The fact that you want God in your life is proof that He hasn't written you off.

God has provided a way for you to overcome all sin if you really want it, but you must want it with all of your heart.
If this is want you want with all of your heart then ask yourself this question. Is this world my home or is the world to come my home?
Do you want the things of this world or the things of the world to come. Where you treasures is there your heart will be also.
Only you can answer this question.
If your answer is you want the world to come then you will have to make a decsion. Are you willing to cut this world loose, are you willing to let it go,
are you willing to say you don't want it anymore? If you can say yes to this and mean it with all of your heart you have taken the first step.
Live for the world to come and let Jesus become you life!!
You  cannot serve two gods.
Rightesousness comes by faith, saying yes to Jesus and no to the world will help you tremendously. It will be your first step of faith, even though you don't have the power within yourself to overcome the world you still need to make this decision daily.
By letting go of this world you will also be letting go of your selfisnness which is the foundation for sin, because the things you have strived for in the past you no longer will want to be a part of.
The second step is Pray without ceasing. Be in constant fellowship with God. Enoch walked with God and was not. Walking with God gives us the strength to overcome the world. Talking to God increases our relationshop with Him. Our relationship with God closes the seperation. Sin is seperation from God, which is announced by the law. Through the law comes the knowledge of sin. In other words the law tells us that the seperation has taken place. Jesus in His life here was in constant prayer constant communion with His heavenly Father. Prayer keeps us focused on God.
The third step is study the word of God to find out who He is and what He wants for you and what He has done  for your salvation through His son Jesus Christ.
Jesus died to cleanse us from all unrightiousness, cleanse means to seperate us from it completely we recieve that cleansing through faith which works by love.
Love brings us back to relationship which closes the seperation gap. Bye the way cleansing is what real forgiveness is, to seperate us from sin.

There is so much more if you are willing to learn the simplicity of the gospel and what it really is for us.
I hope this helps you in your endevour to overcome.