This is a new one! But just in time! I am still 30 and learning. Humor hides my aggression - otherwise I would normally blow up into smithereens. I am a highly impulsive person! And I am working on warping my brains so they don't scramble each time I am 'tested' by one of the strange creatures (humans around me!) and I switch into humor mode.
I was pretty down in the deep deep dumps several years ago and I was practically saved by watching hilarious YouTubers and TV shows (let's not take names, shall we?). But the genre of humor I enjoy has changed GREATLY. It's a more cynical, more dark, more evil sort of humor that I enjoy now.
Seriously --- seriousness is not worth anything. I have tried being serious. I graduated with an MBA 2 years ago, and I have sealed the deal on being serious. Indulging into humor at every problem tickles my creative nerve and I get wild ideas --- perhaps even about how to forget a tough situation altogether.
Learn to laugh it off!