Isn't that a life goal though? To make people laugh and be happy and whatnot.
See, the way I see it, a goal doesn't have to a job or a career or anything like that. It can be the silliest or the most mundane thing you can imagine and it doesn't need to take up your entire existance. It can be the thing you do to unwind after work, or a side project you tinker with on weekends, but it's almost always the thing that gets you trough the tough spots because you know it'll be there waiting for you afterwards.
So go become good at something, anything really, get a living wage, it doesn't need to be immedate or high paying, but enough to put food on the table. With that out of the way you'll have (hopefully) enough free time to pursue your other wants and needs. Sure you'll need to do stuff you don't want to and it won't be easy but honestly, providing for yourself is a basic thing almost everybody needs to be able to do. You might not like that about the world but it's the way things are, and pretty much always have been. And I think the sooner you come to terms with that the happier (or atleast, less unhappy) you'll be.
Your job doesn't define you, you define yourself, your job is just a means to an end, and the most basic end is having a roof over your head and not starving.
Sorry if that seemed a bit harsh or something, just something I've realised myself since I've been struggling with mostly the same stuff you are now, heck I still am to a point but I'm not letting that stuff get me down anymore.
And now for unrelated, personal sads. Completely unproductive day, tinkered a bit with a piece from yesterday, doodled for a bit, studied for a bit, cleaned up the room a bit but nothing substantial, and most of the day is gone. I'm left looking back and realising I've just wasted most of the day doing fuck all and feeling mostly terrible for it :V
Ninja Edit:
No you're not Caz!
You might've been doing something bad without realising it, but that doesn't make horrible. Now that you've realised your error you can work and remedy it. Not doing that will make you a horrible person tho. Everybody has a choice of being good or bad I think, as long as you're aware of what your choices are you choose what kind of person you are, nobody else.