Repentance means to turn around or to turn back to God. It means you change your mind and make a 180 degree turn to go in the opposite direction. We understand that when it comes to salvation sometimes. We repent of our sins and He cleanses us and sets us free. But it doesn't stop there, repentance should be a daily thing because we sin daily.
You might think, oh well I don't sin but if you do a self examination you will discover you do. We tend to think of sin as the “Big” ones, like murder, or robbery, or sexual misconduct. We don't consider gossip, pride in our self, our stuff, or lying, a critical spirit, or not reading God's Word as a sin but they are just a few in a long list of sins we commit daily.
David's repentance was obvious and to the point in his prayer shared in Psalm 51. He said, “Against You and You only have I sinned and done what is evil in Your sight”. He asked to be restored to his salvation, to be in right standing with God. God is willing to forgive confessed sins just like He did with David who was a man after God's own heart. David had consequences for His actions, but his confession made him white as snow again. Aren't you glad we have that same capability, confess and be restored.
You might need to get on your knees before Him right now and confess any known or unknown sins that stand between you and your fellowship with God. You do not want to stand before the Saviour one day and be ashamed. We must be found holy as He is holy. Choose to return to Him with your whole heart, repentance is free and so liberating. If you have never confessed your sins and invited Him into your life do that right now. Or maybe you have Him in your heart but you know there is something in your life that needs to be dealt with before you experience true freedom.