How to you manage the comedown (or hangover) from a meltdown?

Hi All, 

A slightly less fun topic today. 

I've had a little bit of a meltdown this morning/afternoon and I always have such a strong emotional hangover afterwards which can impact the whole day (or even longer). It can make me susceptible to further meltdowns and is just, overall, a rather unpleasant experience. 

I wondered whether there were any tips and tricks you had to manage the comedown from your meltdowns. Please do let me know!

I've tried various things over the years including listening to calming music through headphones, baths, showers, reading, games, talking, not talking, sleeping, watching TV etc. etc. but have never seemed to be able to really do much to help. It might just be that nothing helps but well, thought I'd ask.