Thanks to Penny, I found out this tarot card test.

I am
WHEEL OF FORTUNE!

Which tarot card are you?

But what does that mean? The most I know about the tarot is not to take it literally, so if you get the Death card that's not a sign to start shopping for some new pine pajamas. (Unless I'm wrong, which happens often, it's more like the Greater Arcana equivalent of a dot at the end of the sentence before starting a new one; a Warner Bros. cartoon's "That's all, Folks!") Too bad I don't own a copy of Sallie Nichol's Jung and Tarot. That'd make finding what the Wheel of Fortune stands for a cinch.

Maybe I can discern some meaning out of this card by looking back at the questions from the test and my answers; the test consists of selecting from 9 pair of attributes the ones you identify more with. Below are the ones I selected.

Femininity
Order (Structure)
Fantasy
Fate
Reserved
Cynicism
Liberalism
Moral & Ethics
Decadence

I guess that makes the Wheel of Fortune the representation of structured, reserved feminine personalities who cynically fantasize about a decadent fate of liberalism ruled by moral and ethics. Sounds like someone with a bipolar disorder to me. Thankfully I found Tarot.com, which allows to search for any card from the deck. Problem is, to get the description you have to sign up as one of their users (isn't there anyone who won't ask you to create a user account?), or pay good money. Not being one to spend $5.00 in such a frivolous pursuit, I decided to create a user account, direct marketing e-mails be damned. Once having accepted the user terms, I was able to read about the Wheel of Fortune.

General Card Meaning The central theme of what is traditionally called the Wheel of Fortune card is cyclical change. The Wheel keeps on rolling, churning events in a ceaseless progression of ups and downs, either way freeing us from the past. No one can escape its cyclical action, which can feel somewhat terrifying -- no matter whether we are rising or falling. When one is balanced on top there is a moment of crystal clarity, but the only part of the Wheel not going up and down is the hub, which is your eternal Self, the Source of Freedom. Every one of us will occupy all the points on the wheel at one point or another. The cycle of the wheel is its lesson -- and we can learn to take comfort in it (as we do when we celebrate our birthday). If you don't like the look of things right now, just wait -- things will change. Of course, if you do like the look of things right now, enjoy it while it lasts, because that will change too!

Interesting. Any specifics about what happens if the card represents oneself?

Main (positional) meaning Accept that the wheel continues to turn and that you have no choice but to adapt to its movement. The card in the Self position reveals aspects of how you perceive yourself right now. The Wheel of Fortune in this position indicates that your mind or your heart just won't keep still. It keeps churning up new developments or issues that you thought were resolved. This is the nature of The Wheel of Fortune, which never ceases to turn. You probably feel like you want to get off life's Ferris wheel once in a while, but there is only one good way to do that -- take refuge in the hub, the center from which all the motion is emanating. Much as you might like to, there is no way to stay on top all the time. Your ultimate challenge is to learn to peak and drop without resisting the process, including all its ups and downs.

Yep, bipolar disorder all right.