Having song writers block

i know what i want to portray in the lyrics, im just not really sure how to, ya know? i want to be able to tell the story of someone who shed blood, sweat, and tears because they had something they were good at, and were so sure that if they could get good enough, they could have fun doing it. All of that work only to find something that they are truly passionate and love, and realizing that you shouldn't have to work so hard to learn to be happy with a goal. In the end, the question is whether it was worth the pain and suffering in the end. All of the self inflicted torture only for them to be content with something different. You are happy, but not truly satisfied, feeling like you are wasting your potential for something you enjoy.