So what!

From Barefoot Doctor's Guide to the Tao : A Spiritual Handbook for the Urban Warrior
by Stephen Russell

Letting Go
You sit there alone in a state of mild agitation, the primordial monster of encroaching insanity threatening to escape through the cracks in the plasterboard of the reality you constructed so neatly and to engulf you in its slimy, entropic discharge. Your plans seem to have gone awry and you're racked with doubts about the choices you made that got you into this position in the first place. Who did you think you were anyway, thinking you could take destiny into your own hands like that?

So you're disappointed. So what! Disappointment's only disappointment. It will be transmuted into its opposite by the immutable law of yin and yang anyway.

So, so what! May sound impolite or downright compassionless, but really, so what.

The thing about "so what" is that it's got an edge, a small portion of anger released every time you say it. That's its advantage over "never mind," which is also good and valid, but only when you truly don't mind. Most of the time, though, especially when the disappointment's just recently dropped, you do mind. So with that faint hint of churlish delinquency, stand up, release that irritation and boldly proclaim, "So what!"