What will you choose?

Before you decide, be sure to review Matthew 7:21-23 (the words of Messiah). Pay particular attention to verse 23.

21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven. 22 Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’ 23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’

1 John 3:4

4 Whoever commits sin also commits lawlessness, and sin is lawlessness.

Hebrew 10:26-31

26 For if we sin willfully after we have received the knowledge of the truth, there no longer remains a sacrifice for sins, 27 but a certain fearful expectation of judgment, and fiery indignation which will devour the adversaries. 28 Anyone who has rejected Moses’ law dies without mercy on the testimony of two or three witnesses. 29 Of how much worse punishment, do you suppose, will he be thought worthy who has trampled the Son of God underfoot, counted the blood of the covenant by which he was sanctified a common thing, and insulted the Spirit of grace? 30 For we know Him who said, “Vengeance is Mine, I will repay,”[e] says the Lord.[f] And again, “The Lord will judge His people.”[g] 31 It is a fearful thing to fall into the hands of the living God

When we repent and accept Yeshua (Jesus) as our Messiah and Savior, He forgives us of our sin. He has authority over sin and the consequences of sin, having suffered and died on our behalf.
But after that, there is an expectation that we live by the spirit and not by the flesh. It is the only way to exhibit the fruit of the spirit: Galatians 5:22

But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, 23 gentleness, self-control. Against such there is no law.

But the fruit of the flesh is also defined: Galatians 5:19-21

Now the works of the flesh are evident, which are: adultery,[c] fornication, uncleanness, lewdness, 20 idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, 21 envy, murders,[d] drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things will not inherit the kingdom of God.

Galatians 5:16-18

16 I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh. 17 For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that you do not do the things that you wish. 18 But if you are led by the Spirit, you are not under the law.

If you build the foundation of your life on these ideas, you will be in covenant with YHWH. If you live by the spirit, you will not suffer a certain fearful expectation of judgment, mentioned in Hebrews 10.
If you mess up, grace will cover you. You can repent and turn your ways back to the Father.
Willful sin, however, is a big problem.

If you find yourself uttering this common phrase "I'm just a sinner saved by grace" you may want to consider these ideas I'm presenting here. Not popular ideas, but solidly based in Scripture.
If you continue to sin without concern, because of grace... Please read Hebrews 10.
Don't take my word for it. Use scripture. Read it and believe it.

Think about it... what exactly are preachers and pastors teaching when they tell you not to obey God's Instructions? They are teaching and promoting lawlessness/disobedience. So who would you rather believe?