Overall, you have an impressive profile.
GPA- you increased it from 3.33 to 3.64 that shows perseverance on your part.
GMAT- you have a strong GMAT score - 740.
Community work experience - One year is pretty good.
Work Ex. You have three years of full time work experience (including community work) which is good.
Here are answers to your questions:
Q.1 Also: should I draw attention to my age during college? If so, how should I frame it?
Ans. Graduating at 18 is your accomplishment and you should definitely draw on it.
Q.2 And how does one deal with a question about a failure!??!!?
Ans. I had answered to this question in one of my posts this month. I am copy pasting that here. We are all humans and there are times when we all tend to make mistakes , times when we fall short of our expectations . Some of us bounce back with renewed energy and triumph, while others yield to their failure and never make an effort to try again.
It is all about our perception of failure. People who say they have never failed in life might have not set any standards or goals for themselves and were contended with what ever life sent their way.
You are saying "I work in a really big company where I am a small cog in the big wheel. They don't let me play with anything dangerous enough to really fail at something. Any advice on where to look? "
I would ask you "Didn't you aspire or make an effort to be a big cog in the big wheel instead of a small cog"? If you did, that was a failure on your part. Then how did you better your self to deserve that status? What did you learn from that experience? How did you grow from that experience? Answers to these questions may help you find your failure story.
Also, in addition to Harvard and INSEAD, I would suggest you to apply in safety school as well.
If you find my post helpful, please let me know by giving a kudos .
MyEssayReview - A personalized and dedicated essay-review service