How do you juggle multiple things effectively?

I'm feeling a little bit overwhelmed.  Yes, part of that flows out of not feeling well.  I'm also looking at everything that I need to do.  (BIG mistake!) Then I read a workshop out of Vision 70, "Multiple Projects: Take Control!"
By
Lazette Gifford

That may have been another big mistake, Lazette writes about a billion words a day.  Still, she keeps all her projects in order and on time.  I could find a worse example to follow…

Maybe I should learn from you.  How do you keep multiple projects in the air and finish them on time without major disaster?