Works, Faith and Salvation

Answering the comment left on the "Faith, Works and Salvation" post: No. This gentleman was not saying the same thing. He has no assurance of his salvation. He feels that he has to fight and work everyday towards gaining his salvation. His belief does not offend me. If he has no surety of his salvation, I feel sorry for him, but he does not offend me or my faith.
As for you not changing your worldly ways after you're saved, true conversion will bring about heart changes. Heart changes bring about the desire to change your life. A circumcised (converted) heart is crushed at the thought of offending God. That's what James is saying about faith and works. True faith brings about works. Think of Simon the sorcerer in Acts. He believed Philip when he preached; was even baptized. I doubt his conversion was real. Why? He still had his heart set on himself. He wanted to wow the people with the Holy Spirit. So much so, he was willing to pay for that power. He hadn't changed. Read in chapter 8 of Acts, verses 20 through 24. Peter doubted his conversion also. So much so that he said he was going to perish along with his money. His heart was "not right in the sight of God". Doesn't sound like a saved person to me. Salvation starts in the heart and ends in the heart. I can't give you faith, nor can I take your faith.
I'll finish with a few verses.
Galatians 2:20 and 21 - ²⁰I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.²¹I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain. Hmmm, Paul says he lives his life by faith in the Son of God. He also says that if we are living by the law (works) that we are frustrating [to set aside, that is, (by implication) to disesteem, neutralize or violate: - cast off, despise, disannul, frustrate, bring to nought, reject] the grace of God; AND that when we frustrate the grace of God, we have caused Christ to die in vain. That's pretty harsh.
Galatians 5:1-26 (focus 4-6) - ⁴Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace.⁵For we through the Spirit wait for the hope of righteousness by faith.⁶For in Jesus Christ neither circumcision availeth any thing, nor uncircumcision; but faith which worketh by love. Is it fair to say that the circumcision that Paul speaks about is a work?
When we work in our flesh, our works always die out. I've seen many times where people try to take on the ministry (or lifestyle) of someone else without Spiritual conviction, only to become frustrated and swing 180 degrees in the opposite direction. Not once or twice, but time and time again. Like the man in James who doesn't ask in faith, he's "like a wave of the sea driven with the wind and tossed."
Once again, I know that I didn't exhaust the scriptures, but I do hope that you see where I'm coming from. I also hope you read some of the referenced scriptures from the other post.