As a juggler, it's a little annoying when people use juggling as an analogy and get it wrong. So here's an explanation of juggling and how to do it, whether it's clubs or tasks.
It's all in the throw, not in the catch. If the throw is perfect, the catch happens without any corrections or concious thought.
You may have two hands, but your two eyes can only look at one thing at a time. Jugglers just peep at the object as it arcs over and downwards, and that's enough to tell them where and when to stick out a hand and catch it. This has been confirmed experimentally using opaque glasses to block off the view of the objects except around about the top of the arc.
Once you get beyond juggling three objects, you peep at the object but then you have to remember how it's falling while you peep at another, before you stick out your hand to catch the first object. So 1) consistency is hugely important and 2) you have to practise daily until it's completely automatic.
The most important tool for juggling is gravity. That's how jugglers stack the objects and know where and when they'll fall. If gravity wavered, it'd bring the pattern down. You have to know what to expect. Remember in Firefly how something unexpected would happen, and it'd turn out they'd prepared for that contingency? Same thing, really.
Now let's apply the theory of juggling to 'juggling' a bunch of tasks. You have to be able to give each task some impetus and then move on, knowing the point at which you'll have to return to that task. You have to have some method, equivalent to the way jugglers use gravity, that smoothly handles the tasks while your attention is elsewhere. Finally, you have to make it funny. Or perhaps that only applies to juggling? Well, analogies can only be stretched so far.