Simple answer, no, but I try to stick to trading rules. Buy-in when I'm on the rise, sell out when I start losing before I go too far on the losses. It's either downswing or me not paying enough attention so I blame myself and just stop. I also stop when I can't see the screen anymore or I can't distinguish the cards anymore (Particularly when I misinterpret A4 for AA or as I miracle I am dealt SUITED Aces). It's happened. I also stop the first time I wake up after I've fallen asleep on the keyboard and I've been clearly sitting out for a while.
But most importantly, I stop immediately when my partner requires or requests me, unless I'm running good in a tournament and then she actually drops everything she'sdoing, comes and sits with me and we celebrate together with every hand that I win and swear together at the bastards who beat us on the bloody river, particularly if I had over 90%
odds. Besides, I need someone to shout the cards I am dealt if I have a toilet emergency and then I tell her what to click.