I allow myself to be happy & I like to be around positive people. Habitually negative people are very bad for your health & your other relationships. I don't intentially intend to be uncaring to anyone, but they don't help me being around them.
I've had co-workers who were "Debbie Downers" & the "Rays of Sunshine". The Debbie's made everyone miserable & no matter how you tried, nothing made it better. The Ray's, no matter how bad something was, didn't let it affect their relationship with co-workers. One guy's wife was going through breast cancer & chemo. It was hard for him working full time, taking care of her & their girls (6 to 10), but he always had a smile on his face when he came in. I feel this helped his wife to get well. Five years later, they a little boy.
I try to do things that I enjoy by myself & with my husband. You have to get your mind on other things in good times or bad. It doesn't do well for anyone to dwell on something they have no control over. I know that is easier said than done, but you have to make the effort even if you don't feel like it. Sometimes just doing jobs around the yard & house can help. If you accomplish something, you've made a positive move, no matter how little it may seem.
I like watching the news to know what's going on around me, be it good or bad, but at times I'll just have to turn it off & stop listening. There are times you just have to tune the world out & get positive again. Then you can go & deal with the not so good things.
Funny, when I remain positive, the bad things appear not so big sometimes. Not always, but sometimes.
P.S. No insult intended to the Debbie's out there.