With total overload today with messages and documents, how does anyone stay organized? Some find that actual paper notebooks with to do lists help, others use apps or tools such as Evernote. When things get very busy, having systems in place to check and crosscheck status is critical.
Recommended read: Checklist Manifesto. The author is a surgeon and draws from the practices in medicine that result in major improvements to reducing errors and getting things done right. Excellent read.