Unbelief
Unbelief - doubtful, indecision, uncertainty; no Faith - is one of the most destructive behaviors when it comes to accepting a principle as truth or not, especially when it comes to the Word of God. Some people won't believe in God or His Word unless they can see Him with their eyes. Unfortunately for them, God is a Spirit and anyone wanting to see Him must worship Him in Spirit and truth (John 4:24). "For God so loved the world that he gave his only Begotten Son, so that everyone who believes in Him won’t perish but will have eternal life (John 3:16). One must believe that Jesus is the Son of God. "Trusting with the heart leads to righteousness and confessing with the mouth leads to salvation (Romans 10:10). "It’s impossible to please God without faith because the one who draws near to God must believe that He exists and that He rewards people who try to find Him (Hebrews 11:6). Those who look to the Lord will have Joy radiating on their faces; they will not be ashamed or confused (Psalm 34:5).
Guilt
Guilt produces Self-Reproach and is filled with remorse, and shame. One doesn't have to feel this way. Follow God's principles. God said that He will no longer make you a disgrace among the nations (Joel 2:19). God is light. If we want the light of God to shine on us, we have to abide in His Word and walk in His light. God knows our issue, which is living in sin's darkness. "It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God (Matthew 4:4). Jesus said “Truly, truly, I say to you, whoever commits sin is the servant of sin. And the servant stays not in the house for ever: but the Son stays ever” (John 8:34–35). It all boils down to sin.
Sin
Man inherited the sin nature from the beginning (Genesis 3). "This is the message that we have heard from Him and announce to you: God is light and there is no darkness in Him at all. If we claim we have fellowship with Him, and live in the darkness, we are lying and do not act truthfully. But if we live in the light in the same way as He is in the light, we have fellowship with each other, and the blood of Jesus, His Son, cleanses us from every sin. If we claim we don’t have any sin, we deceive ourselves and the truth is not in us. But if we confess our sins, He is faithful and just to forgive us our sins and cleanse us from everything we’ve done wrong. If we claim, we have never sinned, we make Him a liar and His word is not in us (1 John 1:5-10). We sin when we willingly go beyond the bounds of God's light and principles (Genesis 3). “For if we sin willfully after that we have received the knowledge of the truth, there remains no more sacrifice for sins (Hebrews 10:26).
New in Christ Jesus
God is righteous and Holy. "Follow peace with all men, and holiness, without which no man shall see the Lord (Hebrews 12:14). Jesus said, "I assure you, unless someone is born anew, it’s not possible to see God’s kingdom (John 3:3). We must go through the holy Spirit's sanctifying transformation, separate ourselves from sin and become pure according to God's principles, only then can we enter the kingdom of heaven and be with the Lord (John 3.3). So, prepare your heart for a transplant. Ready it for intimacy with God through His Word, which is truth. Jesus said, "I am the Way the Truth and the Life. No one comes to the Father except through Me (John 14:6).
Praise God from Whom all blessings flow. Put it all in His hands. Have a blessed stress-free worry-free day on purpose, and never stop believing that Jesus paid it all and He is Lord.