If you are facing a challenging situation, it's a perfect time to "get the table ready"...the communion table.  Jesus gave us the communion elements to represent His body and blood, and the finished work on the cross.  When we receive communion, we "do this in remembrance" of Him (Luke 22:19-20), to remind ourselves of all that belongs to us in the new covenant of grace.  No one is disqualified from coming to the communion table, no matter what we've done.  In fact, it's during our times of failure that we need reminded the most of who we are and the victory that was secured for us through Christ.