so, young. it's okay, i hope life never proves you wrong. but sometimes, it does. once you get older and more experienced you will realise that your percentages are quite inverted - only a handful manages to land their dream jobs.
i was born in a shitty family with no money (no poverty either, but no luxury), worked my ass off to try and reach my dream job and mid way through, family got sick and my priorities changed. i have money, just can't spend entirely on my self and life does not stop. now i'm too old to start to pursuit my dream again.
Sometimes you have lots of things working on your favour, but sometimes only one thing going wrong takes you off the track and you can't get back to it. Dedication, hard work and will can only get you so far, you still need lots of luck.