USE OF CALENDAR

 Use a calendar and write down everything you need to do and when you need to do it – on the same calendar:

It doesn't matter whether your chosen calendar is electronic or paper. What matters is that you create and maintain one "appointment central", a one-stop shop, if you will, of everything you must and want to do. This serves two purposes; it ensures you don't miss anything important and it serves as a to-do list.

Using a calendar that can travel with you (such as a calendar application on a smartphone) is a real time saver compared with ferrying bits of paper back to wherever your paper calendar is located.