Like #1 said there’s nothing wrong with being serious. I’m a very un-serious person but that’s because I just laugh at everything and don’t take anything too seriously. It’s just a part of my nonchalant demeanor. You can’t sweat the small stuff and just have to find the humor in it all. I can be serious when I need to be and am serious about a lot of stuff, but general day to day stuff I just don’t see a point in stressing out over by being overly serious