It costs to follow Jesus. He comes to us as Saviour AND Lord. He calls the shots. He becomes the Center of our lives. Most folks don't like this prospect - especially in affluent societies where every fleshly need and want can be satisfied (just not the most important eternal, spiritual need). But God can only be what He is: God. And He will be God just as much in our lives as in the rest of the universe He created and sustains at every moment. That "churning" you feel is probably the result of sensing that you have to go "all-in" with God, that He's going to take all of you, not just bits and pieces.
Can you trust Him? Can you really give God everything, all of you, and it'll be good - better than not giving yourself over to Him?
Well, God doesn't knock at the door of your heart and say, "Hey! Open up or else!" No, He first showed you (and all of humanity) that He is a God of love and that He extends that love to you - a love that is mind-blowing in its scope, and power, and perfection. How? By humiliating Himself in setting aside His heavenly power and glory, taking on human form, then living as one of us, enduring the scorn, ridicule and hatred of those He made and loved, and then dying at their wicked hands to save them - and you - from the terrible, eternal penalty of their - and your - sin.
This is a God you can trust, that you can yield yourself to totally. He loves you more than anyone; you can rest easy in His love for you. And the love God has for you, the love He'll give to you, cannot be found anywhere, or in anything, else.
1 John 4:9-10
9 By this the love of God was manifested in us, that God has sent His only begotten Son into the world so that we might live through Him.
10 In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation for our sins.
1 John 4:16-19
16 We have come to know and have believed the love which God has for us. God is love, and the one who abides in love abides in God, and God abides in him.
17 By this, love is perfected with us, so that we may have confidence in the day of judgment; because as He is, so also are we in this world.
18 There is no fear in love; but perfect love casts out fear, because fear involves punishment, and the one who fears is not perfected in love.
19 We love, because He first loved us.
John 3:16-17
16 "For God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life.
17 "For God did not send the Son into the world to judge the world, but that the world might be saved through Him.
Do you know God loves you? Are you really, fully convinced He does? Until you are, making Him your Lord is going to seem a scary prospect.
Sin has the effect of causing us to cease caring about holiness, about God and His righteousness. And the longer one remains in sin, the more hardened into it they become, and the more dulled to God and to His commands they will be. Sin costs, too, you see. But it can be like farming: You plant the seeds of sin, they grow, and produce a harvest that has multiplied what you planted. A person always reaps more from sin than they planted, they always reap later than they planted, and they always pay dearly for what they've planted. The Bible says that, along with becoming hardened to God and holiness, sin also always brings death of some kind. Death of fellowship with God, first of all, but death, too, of joy, of peace, of purity, of relationships, of health, even, and then, eternal death in hell.
Romans 6:23
23 For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
James 1:15
15 Then when lust has conceived, it gives birth to sin; and when sin is accomplished, it brings forth death.
Galatians 6:7-8
7 Do not be deceived, God is not mocked; for whatever a man sows, this he will also reap.
8 For the one who sows to his own flesh will from the flesh reap corruption, but the one who sows to the Spirit will from the Spirit reap eternal life.
Wanting to follow Jesus has a lot to do with knowing who he actually is, and understanding how much he loves you. God won't make a puppet out of you; there can be no love when it is compelled, you see. You must, then, choose to love Him, to surrender yourself to Him and then, by faith, wait on Him to transform you.
Romans 10:9-13
9 that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved;
10 for with the heart a person believes, resulting in righteousness, and with the mouth he confesses, resulting in salvation.
11 For the Scripture says, "WHOEVER BELIEVES IN HIM WILL NOT BE DISAPPOINTED."
12 For there is no distinction between Jew and Greek; for the same Lord is Lord of all, abounding in riches for all who call on Him;
13 for "WHOEVER WILL CALL ON THE NAME OF THE LORD WILL BE SAVED."