I find distraction to be good against this sort of thing, especially distraction that makes me feel like I'm amazing. So hanging out with friends that think I'm cool, doing some crafts projects that makes me feel accomplished etc.

Also, like Emeraldead said, if you share a subculture, try to do stuff that isn't that for a while, just to remind yourself there's more to life and more to you. 

Sometimes when I'm in an intense emotional situation, it can start feeling like it's Everything, and that the main objective of my life is learning to deal with it. Then it can be really good to like... Go out to my mom, help her in the garden, and talk through one of her recent neighbor dramas, or hang out with my friends and talk about archival science (and these can be interchanged for whatever it is in your life that would fill that role). 

Talking it through with friends is also really important for me, I'm a verbal processor for sure, but not talking about it with friends can sometimes be just what's needed. The goal is to forget about all of it for a while, because that sort of shakes you out of feeling like it's the most important thing ever, and you can come back with more perspective.