When we talk with God in prayer we should Confess.

    If we confess our sins, He is fatihful and just and will forgive us our sins and purify us from all unrighteousness.                (1 John 1:91 John 1:9
Spanish: Biblia Reina Valera - revisión de 1995 - RVR95

9 Si confesamos nuestros pecados,ñ él es fiel y justo para perdonar nuestros pecados y limpiarnos de toda maldad.

WP-Bible plugin

    If your sin only affected other people, you could get away with it as long as no one found out.  But our sin is first and foremost against God (Psalm 51:4Psalm 51:4
Spanish: Biblia Reina Valera - revisión de 1995 - RVR95

4 Contra ti, contra ti solo he pecado; he hecho lo malo delante de tus ojos, para que seas reconocido justo en tu palabra y tenido por puro en tu juicio.c

WP-Bible plugin
).  Confession is admitting to God’s holiness.  To confess means to agree with.  You come to God and agree with Him that you were wrong and tell Him that you are sorry.

      You cannot hide, rationalize, or excuse you sin before God.  Instead, He demands your repentance.  Repenting is not   ” Oh, please forgive me, God, so I don’t feel guilty so I can do it again next Friday night.  Repentance says,  “Lord, I’m so sorry, and by Your strength and power I want to be different”.

      When you sin, deal with it immediately.  Some of you wait days, weeks, and even months.  Some of you only ask God for forgiveness at winter and summer camps.  DON’T WAIT!  When you sin, deal with it at that moment.  Agree with God that you were wrong, tell Him you’re sorry, and if necessary, apologiz to other individuals.

Confess to God in your prayers everyday and ask for His forgiveness.  When talking with God we also need to Give Thanks and Ask God in our prayers.