I'll sit down to do some work but then I realise that I don't fully know what I'm doing with this task so then I swap tasks realise the same about the second task so I decide to organise and plan out what I need to do but then I realise that I want to do that many things that I can't verbalise one of them, so then I just put everything away and my chest feels really heavy and tight like I've got a necklace on that's too tight or like someone's pushing in from my ribs. 

Does anyone else have this problem and does anyone know how to help it? This latest event happened yesterday and my chest still feels tight.