My Mum gave me two quotes that I always think of:
'The only way out is through'
'There is nothing left at this moment but to laugh'
And I've always told my DC and others that are struggling:
'You are never stuck, ever. There is always a way, it just might be a different route. Keep asking for help and you will recieve it'
My ways of dealing:
Go for a drive with fav songs playing, windows up and sing at the top of my voice.
Cuddle DDogs and have a good romp with them outside.
Listen to fav books with earbuds/earphones so the story is right inside my head and I can't think about anything else.
Hope all is well for you soon OP