Undergraduate / (volunteering) COMMON APP -- General Essay, significant achievement, risk [4]

I would say this essay fall under the first topic: Evaluate a significant experience, achievement, risk you have taken, or ethical dilemma you have faced and its impact on you.

The intro is wonderful. I think you should change the last sentence from And you would have thought I was in heaven. to I thought I was in heaven. just because I don't think you should use second person in an admission essay.

Best of luck!