Feeling like you're falling apart is a rather disconcerting experience... I felt like that for a while earlier on this year and it felt like my whole identity was just disintegrating. Perhaps that's what you mean, or maybe you mean that you feel like you just can't cope with things any more and like you're just breaking down, but that feeling too is not exactly pleasant at all. I think the best solution to that is to physically remove yourrself from stress for a week or so - but the problem is that's not usually possible! I've not taken any anti-anxiety meds but they will probably work if your dr prescribes you some.

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Hope you feel better soon! Please update when you can