Is it normal if i don't take anything seriously?

I take things seriously nor do I like taking things seriously. I'm really a jokester whether I'm joking around with others or with myself. But "potential problem" about not taking things seriously is like at work or I got rejected, or I did something wrong, I had bad manners, mistakes, etc. None of that do I care about or I do but not so much where I'll stress out. I just don't care and laugh it off. Sometimes it might look like I'm doing just that, "not taking something seriously" in a care where you are supposed to and I lookk careless or unlikable for some reason and it's like again, I don't care that much and not gonna stress over it. It's like serious things don't hit me deep enough or I could also be heartless. There a few things I care and love a lot and when those moments happen, it's real and it's true and whatever stress I feel about that, it's worth it because I don't always feel that way. Those things are precious to me. Other than those things, if something like getting fired happens (depends on why) i think I would quickly move on and not care about it. Idk if it's also because I have so much faith that when something bad happens, I don't let it impact me. I'm like whatever, I'm not trippin but it looks like I should be? Don't know. Regardless, I'm happy that I am like this although to other people think its crazy or don't like me for it just cause I'm able to keep a smile on during rough times.