Somehow I got into the habit of checking this Phabricator report linking to the oldest open task assigned to each user:
https://phabricator.wikimedia.org/maniphest/report/?order=-oldest-all
Your username probably appears in this list. If not, it's probably time to take a task and assign it to you. :)
There are 223 users with tasks assigned, from which 132 have a task assigned that was created at least one year ago. At least in the upper section of the list, most tasks welcome a fresh look, and your help is welcome (starting by your own tasks). There is a convenient tooltip showing the title of the tasks linked.
There is a complementary view of the same list, sorting users by number of tasks assigned.
https://phabricator.wikimedia.org/maniphest/report/?order=-total
I'm currently 20th with 24 tasks assigned, which is already unrealistic.
You might want to re-check your assigned tasks for everybody's benefit and your own. See also https://www.mediawiki.org/wiki/Phabricator/Project_management#Assigning_task...