In my case:
i totally avoid watching news reports too much negativity.
Avoid discussions in social media and just block or ignore toxic people.
Some people may find useful to practice breathing exercises or meditate in my personal case my mind is always too loud for me to meditate so instead i sing and cry if i need to, it releses oxitoxin in your brain.
A hot shower before bed will help u sleep better.
Doing any sort of physical activity baby steps do matter even ten mins of dancing or whatever that makes u move ur body.
I have 3 dogs a cat and a hamster and i wear they know when u are sad and they will try to cheer up up its such a good theraphy.
Most important talk to someone u trust let it out u may find out u are not alone in this and no one ABSOLUTELY NO ONE SHOULD GO TRHOUGH PAIN ALONE! 
And dont be hard on yourself for feeling that way instead be your besfriend be the person you needed when u were a child and felt that way.
AND TOXIC IS TOXIC NO MATTER IF ITS A FAMILY MEMBER OR COUPLE OR YOUR BOSS OR WHOEVER CAST THEM OUT YOUR MENTAL HEALTH IS PRICELESS!
Emphaths usually carry too much in their shoulders sometimes in good to think on your wellbeing first IS NOT SELFISH ITS SELF CARE AND SELF ESTEEM after u get better u can help others foccus on yourself first no one can give what they dont have once u are healing your light will help others healing.
