nutshooter said:
Tough question. What i do is put on mozart or greatful dead while i play. this almost puts me to sleep because im so calm. Then i play at stakes where if I lost i wouldn't care. This is hard because you don't want to play at such low stakes that you find each hand to be a joke and you dont want to play at stakes that cause you to become violent.
LOL, so Grateful Dead = Mozart
The idea of inducing a "calm" state is a good one though.
OP, you said you keep cool when playing live, you need to put yourself into the same state when playing online. While playing a hand, you might try to recall similar
hands that you've played live, and try to imagine that you're actually at a live table.
Or pretend while you're playing online, that you have a prospective employer / client sitting with you, or anyone else that you wouldn't want to display your temper in front of.
Google for self hypnosis or read PsychoCybernetics by Maxwell Maltz.
IveGot0uts's post about a classically conditioned response, is great. In simpler terms, you've developed a (bad) habit, that you need to replace with something else. Smiling / laughing would be the healthiest one
Other posts here about dis-regarding the results are great, and they hint at why any of us get upset.
For most of us, when an outcome doesn't match an expectation, the "automatic" result is usually a "negative" emotion. If we're aware of that we can work on creating a positive or neutral reaction.
A great series of books on emotions->results-expecations etc, is the "Inner Game" series by Tim Gallwey.
Btw, I wrote this post just after shoving with top two pair and getting sucked out on the river by a straight draw
