You must believe that I am trying to work my way to heaven. No one who works to get to heaven will make it. The fact is I know that I am a son of God by Romans 8: 13-14. Do I believe that I am saved because I worked to put to death a the sin (Not all my sin) of the flesh? No, I know that it was Jesus' Spirit that did the work. I just followed His voice. I have since continued putting sins to death by working to rid them following His voice. Not for salvation, but to walk in the Spirit and continue living physically.
As for not losing salvation.
1 Corinthians 11:31 For if we would judge ourselves, we would not be judged. 32 But when we are judged, we are chastened by the Lord, that we may not be condemned with the world. NKJV
God chastens us so we will not be condemned with the world.
John 3:18 He who believes in Him is not condemned; but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God. NKJV
If we believe in Him why would God say that He chastens us so we will not be condemned with the world. If we cannot be condemned, lose salvation, God, is lying about the reason for His chastening those who believe? Either God is lying, or we can lose our salvation. God does not lie; we can lose salvation if we quit believing in Him. The fact is when we believe in Him, we are born from above.
John 1:12 But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: 13 who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. NKJV
To those who received His testimony, believed in Him, He gave the
right to become a child of God. We do not become a child of God simply by believing in Jesus once. We must continue to believe in Him. Can someone lose salvation by quit believing in Jesus?
2 Peter 2:18 For when they speak great swelling words of emptiness, they allure through the lusts of the flesh, through lewdness, the ones who have actually escaped from those who live in error. 19 While they promise them liberty, they themselves are slaves of corruption; for by whom a person is overcome, by him also he is brought into bondage. 20 For if, after they have escaped the pollutions of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and overcome, the latter end is worse for them than the beginning. 21 For it would have been better for them not to have known the way of righteousness, than having known it, to turn from the holy commandment delivered to them. 22 But it has happened to them according to the true proverb: "A dog returns to his own vomit," and, "a sow, having washed, to her wallowing in the mire." NKJV
No one escapes the pollution by simply knowing that you can be sinless by believing in Him. To escape the pollutions, they must have believed in Him for their salvation. No one can again become entangled unless they were free of the entanglement. And what did they do to again become entangled in the pollutions? Verse 21 they turned from the holy commandment. What commandment?
2 Peter 3:1 Beloved, I now write to you this second epistle (in both of which I stir up your pure minds by way of reminder), 2 that you may be mindful of the words which were spoken before by the holy prophets, and of the commandment of us, the apostles of the Lord and Savior,
NKJV
Peter writes this second epistle to be mindful of the commandment of the Apostles. What are the commandments the apostles taught?
1 John 3:22 And whatever we ask we receive from Him, because we keep His commandments and do those things that are pleasing in His sight. 23 And this is His commandment: that we should believe on the name of His Son Jesus Christ and love one another, as He gave us commandment. 24 Now he who keeps His commandments abides in Him, and He in him. And by this we know that He abides in us, by the Spirit whom He has given us. NKJV
(Here again are those pesty commandments you find troublesome.) Those are the commandment that the people Peter described in
2Peter 2: 21 turned from. They quit believing in Jesus and became again entangled in the pollutions of the world.