One thing that I have learned is that there is inherent redundancy in early drafts. You'd be surprised if you do this exercise.
1. Remove a complete sentence from the essay.
2. Does essay still make sense?
3. If, then redundance.
One other thing I wanted to note is that you mentioned in #5 that you are writing about how those lessons will translate into your learning aka growth at Kellogg. I have a feeling that they might not always be the same thing.
What I mean is.
Grim situation X happened --- You did Y and convinced some other people to achieve some results Z and some other result V which was long term evidenced by P, Q and R --- In the process of Z you learned A and B -- At Kellogg you will grow by doing E F and G and use them in your goals of M and N (short and long term).
I am running out of substitute alphabets.