what What

What to do.
How do you pick a career?
should you do what you love-even without much experience,
or do what your good at?
This thought keeps me up at night, quite literally.
I think my biggest problem is thinking everyone will be better than me.
I sometimes think that if I want to be a designer(of any sort) a baker, a writer, I should be the best now. Can someone actually learn this stuff later in life and succeed in it?