[Kurn, son of Mogh]

I usually play for a fixed amount of time regardless of results. The only variation might be if the table conditions are very good and I'm still mentally sharp, then I'll stay a little longer, but I'll always set either a time parameter or, stop soon after the conditions change (e.g., bad players leave).

As to what constitutes a good or bad session, that has nothing to do with profit/loss. Did I make good decisions? Were my reads accurate? If not, why not? Positive answers to those questions make it a good session even if I took a big monetary loss, since I have no control over what cards come after I make a decision.

Poker can be very counter-intuitive. Good monetary results do not necessarily mean you played well.