Answer:
the quote says a lot about our emotions and feelings. When we get what we want, we call it success. we achieve something that makes us happy. And when we are happy to something that we got, it really means that we really really want to get it.
For example "someday, I want to be a teacher" and when the day comes that you are now a teacher, we will say "yes, I succeed!". you will be proud and happy. and that happiness really means we really want to be a teacher.
hope it helps