There is a time for celebration and rejoicing and for worshiping God, and then there is a time for mourning and grieving and laying bare our deeds before the Lord.
Consider what James says,
“Draw near to God, and he will draw near to you. Cleanse your hands, you sinners, and purify your hearts, you double-minded. Be wretched and mourn and weep. Let your laughter be turned to mourning and your joy to gloom. Humble yourselves before the Lord, and he will exalt you.” James 4:8-10
Admitting that we have done wrong is one of the most freeing experiences. Repentance is deep intimacy with The Father.