One tip that I have found to be simple but helpful in managing my 3 ring circus is to use a quad-pen on a master calendar. A quad pen has 3 colors of ink (black, blue and red) and a pencil all built into the same writing device. I write all of the activities going on in my life on one calendar but I use the colors from the quad pen to differentiate the three rings of my life. I use black for my business appointments, blue for my personal activities and red for the activities that relate to my relationships. I use the pencil for appointments that are tentative and have not yet confirmed.
This method keeps my calendar organized but also gives me a great visual way of seeing what is going on and where my rings are having conflicts. A real danger is having multiple calendars that are not in sync (like a work calendar, a pocket calendar and a family calendar). One organized calendar will reduce the stress of wondering what ring I should be in and when. If you use an electronic device or PC for your calendar, the same concept works using color labels.