suggestions of a better metaphor
It's great if you can use a metaphor based on the THEME you maintain throughout the essay.
You need one magic word. You need a word or phrase that will stick in the reader's mind.
Such a relationship I have is one with my first Economics professor. He sparked my major declaration and current obsession with Economics. ---Do not write in a complex way unless it is necessary for clearly making a point. Always keep it simple:
I have such a relationship with my Economics professor.
He sparked my major declaration and current obsession with Economics. ----THIS is now your theme. You planted this sentence at the end of the first para, and the reader remembers it. Can you make this sentence more meaningful? Do not simply say what your major is. Give the reader a glimpse of your plan... your vision.
apostrophe:
father's