For cash games, like eejit said, a break is ALWAYS necessary, as it is more difficult to put the blame on any certain 60/40 or 4:1 situation like the one that snapped you off in a MTT. I have found that it is only a measure of time and will that fix that stress bubble expanding in your chest. Sometimes, when i've been on the ice for multiple sessions, weeks, even months, I feel like I'm going to have a heart attack. Another thing, is it is easy to fall into such a slump that your mind only thinks of deficit and loss, which can really bad on your social life. Take that break for sure. I'm out for the night though, hope this was helpful.