Yule starts at sunset tonight.
Recommended practice is, prior to sunset, to open projects that you wish to work on and to complete before sunset on December 31 (the start of Twelfth Night and Berchta's feast day). Currently-open projects should be completed by Twelfth Night or abandoned completely and restarted in the New Year. Ongoing projects can identify a goal of a phase completion or a stopping point. New projects should be delayed until the New Year once Yule begins; focus instead on completion of that which is still in process.
Historically the oldest references were to spinning and weaving but Pennsylvania German oral tradition also extends it also to smithing, canning, and carpentry. Urglaawe examines the mindset behind the need to complete open tasks and the Verbot on starting projects during Yule, and we apply the concept to all aspects of our lives wherever it is practical and possible.
Job requirements may make some of this difficult or impossible to avoid, but the mindfulness applied to figuring out appropriate areas in your life to recognize the need for completion does matter.
Berchta and the lesser-known Berchtold are deities associated with the end of something or the completion of a cycle prior the the restart. There are many considerations that go along with the mindfulness: responsibility, deprivation, organization, preparation, and being willing to abandon partially-completed work if procrastination is a problem.