There is an effort on our part.
1. Believe
2. To Rest in God.
That is the one battle the devil will go all out to persuade you to either give up or disbelieve or be agitated all the time.
Check your life and you'll see either one of the 3 is true or happening.
Our fight in life is never against people but against Spiritual forces of darkness waging war in our
mind, not our circumstances.
Ephesians 6:12 -
For our struggle is not against flesh and blood,
but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms.
2 Corinthians 10:3-5:
…For though we walk in the flesh,
we do not war according to the flesh, for the weapons of our warfare are not of the flesh, but divinely powerful for the destruction of fortresses. We are destroying speculations and every lofty thing raised up against the
knowledge of God, and we are taking every
thought captive
to the obedience of Christ,…
The Devil will wage war to confuse you about your Salvation, making you think you need to do something, Fulfill the Commandments via obey God example, etc.
The Devil will wage war to confuse you making you think you've not up to standard, ie: you've sinned too many times after being saved.
This is the daily battle for the believers.
Every believers have different spiritual battle.
Like mine, the devil is fighting hard to stop me from serving in Church. He knows, can't persuade me that I'm not saved, so uses other weapons of warfare. I know.

just joking. i think the salvation is really easy. just declare Jesus is our Lord and we are saved. but of course it has to come v action. (eg. u agree that fast food is not healthy. by doing the action [abstinence from eating fast food], u will not unhealthy.)
by declare Jesus is Lord also have to be coupler together v action which is do something u agreed v Him by being set free. free from worldly standard so u no longer afraid of being judge by other by doing those godly deeds.
it's just my thought.