Apostle Paul's (and our) dilemma

Very often, a Christian's behaviour is measured against the Ten Commandments, or the 7 Deadly Sins. Additionally, there's a lot of other do's and don't in the Bible. The Apostle Paul has the following to say about obeying God's law and other do's and don'ts:

(Paul also struggled against sin like us!)
Romans 7: ²¹So I find this law at work: When I want to do good, evil is right there with me. ²²For in my inner being I delight in God's law; ²³but I see another law at work in the members of my body, waging war against the law of my mind and making me a prisoner of the law of sin at work within my members. ²⁴What a wretched man I am!

(fortunately....)
Romans 8: ⁵Those who live according to the sinful nature have their minds set on what that nature desires; but those who live in accordance with the Spirit have their minds set on what the Spirit desires. ⁶The mind of sinful man is death, but the mind controlled by the Spirit is life and peace.....

(... a Spirit-filled life....)
Romans 8: ⁹You, however, are controlled not by the sinful nature but by the Spirit, if the Spirit of God lives in you.

(Therefore.....)
Romans 8: ¹²Therefore, brothers, we have an obligation—but it is not to the sinful nature, to live according to it. ¹³For if you live according to the sinful nature, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live

(Paul does not say that a Spirit-led believer automatically does not sin, but he says we have an obligation to live according to it. The Bible gives us this assurance....)
Romans 8: ¹Therefore, there is now no condemnation for those who are in Christ Jesus, ²because through Christ Jesus the law of the Spirit of life set me free from the law of sin and death.

(The Apostle Peter has this to say about leading a godly life that will ensure you are on the right track to heaven)
2 Peter 1: ⁵..... make every effort to add to your faith goodness; and to goodness, knowledge; ⁶and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness; ⁷and to godliness, brotherly kindness; and to brotherly kindness, love. ⁸For if you possess these qualities in increasing measure, they will keep you from being ineffective and unproductive in your knowledge of our Lord Jesus Christ. ⁹But if anyone does not have them, he is nearsighted and blind, and has forgotten that he has been cleansed from his past sins. ¹⁰Therefore, my brothers, be all the more eager to make your calling and election sure. For if you do these things, you will never fall, ¹¹and you will receive a rich welcome into the eternal kingdom of our Lord and Savior Jesus Christ.