Sometimes we get sad before God because of so much wrong stuff we do. It makes us feel ashamed, because we know that Jesus made the greatest sacrifice ever for us, giving his own life for our sins, but we still insist in making him sad and disobeying him. Then we even became ashamed of talking to God, of asking for forgiveness again for the very same sin we committed before, over and over again. But that’s the Devil’s strategy to keep us apart from God. That bastard makes us forget that Jesus’ sacrifice is great enough to cover even our darkest and most shameful sins.
"Come now, let us settle the matter," says the LORD. "Though your sins are like scarlet, they shall be as white as snow; though they are red as crimson, they shall be like wool.
This means, God is powerful enough to forgive out sins and good enough to do so.
Moral: you sinned? Ask for forgiveness and for help not to do it again. Also seek in God ways to please Him more. The closer you get to God, the farer you stay from sin. And if it’s hard to keep yourself saint, ask Jesus for help, because he promises to relief us from our burdens. And talking to him is no secret, it’s just talk, just like talking to anyone else.