It never ceases to amuse me how the perception of one isolated incident can alter one's general outlook in such a profound way. 

Everyone remembers the bad beats and most delight in relating the horror stories that they've witnessed and experienced. But how many of the marginal hands do we remember? The coin flips won, the coin flips lost? The bread and butter hands of tournaments that form all but the tiniest of minorities of every game of poker we've ever played?

But such is the nature of gambling; the constant emotional rollercoaster of upswing and downswing, where an isolated incident can determine not only how you perform for the rest of that day, but perhaps the next wekk, or month, or whether you go without dinner that night or absentmindedly neglet to kiss your loved one goodnight.

I suppose the best way to attempt to manage this is to train oneself to adopt a dispassionate approach to the game, but herein the paradox lies. Remove the passion and emotion and you may find your bankroll increasing, but without the same passion and emotion, what's the use of the material prize?

There's an old axiom which sums the situation up nicely... something about money... and happiness... I forget how it goes... :-P