We have no part in our own salvation, none at all! To get salvation or to keep it!
Ephesians 2:1-10 "2 And you were dead in your trespasses and sins,
2 in which you formerly walked according to the course of this world, according to the prince of the power of the air, of the spirit that is now working in the sons of disobedience.
3 Among them we too all formerly lived in the lusts of our flesh, indulging the desires of the flesh and of the mind, and were by nature children of wrath, even as the rest. ...
4 But God, being rich in mercy, because of His great love with which He loved us,
5 even when we were dead in our transgressions, made us alive together with Christ (by grace you have been saved),
6 and raised us up with Him, and seated us with Him in the heavenly places in Christ Jesus,
7 so that in the ages to come He might show the surpassing riches of His grace in kindness toward us in Christ Jesus.
8 For by grace you have been saved through faith; and that not of yourselves, it is the gift of God;
9 not as a result of works, so that no one may boast.
10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand so that we would walk in them."
Notice the words in verse 9 " NOT A RESULT OF WORKS" and verse 10 "for we are HIS workmanship."
Those who think they can lose their salvation are refusing to accept that they cannot be good enough or work hard enough to be righteous. They don't want to let go of their "self-control" to trust Christ for His.