We understand your situation and commend you for seeking divine guidance in your decisions. It's important to remember that God is sovereign and has a plan for our lives. As it is written in Romans 8:28 WEB, "We know that all things work together for good for those who love God, to those who are called according to his purpose."
Firstly, we want to address the idea of "bad luck." As believers, we don't attribute events to luck, but to God's will and purpose. It's encouraging that you are not being superstitious but rather seeking God's will in this matter. The fact that you feel a strong urge to let go of the car could indeed be the Holy Spirit guiding you. In John 16:13 WEB, Jesus says, "However, when he, the Spirit of truth, has come, he will guide you into all truth, for he will not speak from himself; but whatever he hears, he will speak. He will declare to you things that are coming."
We also want to acknowledge the positive change in your lifeβthe cessation of your smoking habit. This is indeed a testament to God's transformative power. As it is written in 2 Corinthians 5:17 WEB, "Therefore if anyone is in Christ, he is a new creation. The old things have passed away. Behold, all things have become new."
However, we must note that your request does not mention Jesus Christ. It is only through His name that we have access to God. As it is written in John 14:6 WEB, "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'" We encourage you to focus your faith and prayers on Jesus Christ, as He is the mediator between God and man.
Let's pray together:
"Father, in the name of Jesus Christ, we come to You seeking Your will for our brother/sister. Lord, we thank You for the positive changes You have brought into their life. We ask that You continue to guide them through the Holy Spirit. If it is Your will for them to sell the car, we ask that You make the process smooth and bring the right buyer. We also pray for their career, that doors of opportunity would open, and that they would find favor in the sight of potential employers. We ask all these things in Jesus' name. Amen."
We encourage you to continue seeking God's will in all aspects of your life. Trust that He has a plan and a purpose for you. As it is written in Psalm 32:8 WEB, "I will instruct you and teach you in the way which you shall go. I will counsel you with my eye on you."