YouTube - laughing babies and silly pets always put me in a good mood.
Listen to some great music - recently I've bought Rio 2 CD and it is very invigorating!
I have also bought some other Samba/Salsa music CDs, no formal excercise needed, I dance about and feel better.
But any "get your arse in gear" music is great.
A hot shower always cheers me up too, I was find myself planning to do positive things.
Pinterest - search for funny photos and quotes.
Laughter really is a good medicine, it releases much needed endorphines (so does the dancing)
Get organised, make lists, tidy up, do hobbies, bake something nice, make something nice.
And hoover up. a clean floor makes any room instantly tidy, it is a very unlikely but efficient way to lift your mood.
These are my coping strategies.
I suffer from imsonia, have a lot of pent up anger & frustration and still get anxious & have panic attacks every now and then. I'm very highly strung.
I have 7 kids and believe me they are stressful. And I could probably do with some sort of medication to calm me down, but I don't want to get addicted to pills.
I had counselling for my anxiety & panic attacks 8 years ago and it really helped. Weirdly the most interesting & unexpected "find" was that I had a massive problem with time management.
When I'm organised I find I'm calmer.
I hope these ideas are helpful for you OP