Festivus (and the airing of grievances)
In order to air your grievances, of course, you first have to list them, prioritize them, amplify them and intensely relive them.
To prepare for the airing of grievances, a ceremony we often partake in but which rarely produces anything of value, we make ourselves unhappy all over again.
Perhaps we could have an airing of privileges instead. Or an airing of good fortune. An airing of times we've been trusted or supported or given a chance. Those lists are much more productive to make.
Other than that, a fabulous holiday. Enjoy.