Remember that old Seinfeld show phrase, "Serenity Now"? I've said it many times in a joking manner, but taking a deep breath and actually saying it with meaning will help to calm frazzled nerves. Try it!
Daily life can beat us down physically, mentally and emotionally and if we don't take action to be calm and happy, before we know it, we are a mass of strung out, negative emotions looking for a place to land and if there's no outlet, it may turn into ill health.
I'm not suggesting you become Pollyanna, a little ray of irritating sunshine, lol, just that you maintain a positive outlook by resisting unwanted inputs, like bad news media and downer people. If you have to be around them, attempt to let their negativity roll off you rather than suffering the consequences.
For instance, my husband has a favorite TV show and I too, really like the characters in it, but it's always focused upon particularly disturbing behaviors that infiltrate my head and bother me for days after, awake or asleep, so I just choose not to watch it.
I resist large mainstream news outlets for the same reason and prefer current events in bite-size 140 character feeds so that I can choose to investigate further, or not.
In contrast, when you do something positive and hopeful, it brings a smile to your face and a calmness to your spirit. This is so cliche, but one thing that does it for me is walking on a beach during a misty northwestern rain. Alas, here in the mid-south that's not possible, so my rebounder, a candle, upbeat music and fresh air have to suffice.
For some, it's meditation, sports, prayer, dance, good food, family, song, pets, hobbies, or work, if we love what we do.
What is it for you that brings joy to your day and keeps your spirit calm?