Oh, come on, there's more to it than that. Romeo and Juliet doesn't work for it that well, nor does MacBeth, but Star Wars is spot-on, for example.
Romeo starts the play recently broken up with the love of his life, he sees Juliet who offers him a way to mend his heart and goes for it overcoming many of the boundaries set his way... Then he is finally bared his world shifts... He no longer sees the world without Juliet as desirable so he ends his life.
There Heroes Journey.
Beginning, middle, end... Heroes Journey
Chance, Trail, Change.
Or if we expand all elements of the heroes journey are present in Romeo and Juliet... Including the "Mother Goddess"
Starwars is just typical because you can identify a heroic character who does something positive for everyone.
While Romeo isn't a hero and his actions do not benefit anyone in anyway. He tries to do the right thing but is a freeken moron (intentionally so! Remember I have no problem with dumb annoying characters if they are intentional... and frankly I can put myself in his shoes... I've tried to do the right thing and failed spectacularly before and make things a lot worse because I was being a goodly little two shoes and didn't really think about what was going on... Lets just say that Romeo is sort of the character that through the early sections of the play I am uncomfortable with because he often makes the mistakes I make)