There's so much pressure surrounding careers these days.
No wonder you're worried!
I've found that the right career just comes to you. I'm not saying you won't need to work at it. But one day, something will suddenly make sense, and you'll stick with it.
Try not to push yourself into making a decision too quickly. That's my best advice.
And the horrible realistic thing is that no matter what you do, there will be times that it is stressful and you don't enjoy it. You just have to make sure that it is something you will appreciate the end result of.
You'll be fine, if you have passion for something, then it's never too late.